| Index: pkg/analyzer/lib/src/generated/element_resolver.dart
|
| diff --git a/pkg/analyzer/lib/src/generated/element_resolver.dart b/pkg/analyzer/lib/src/generated/element_resolver.dart
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..04d36846e3dd210e126da5286f89f0cd8694eb2a
|
| --- /dev/null
|
| +++ b/pkg/analyzer/lib/src/generated/element_resolver.dart
|
| @@ -0,0 +1,2637 @@
|
| +// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
|
| +// for details. All rights reserved. Use of this source code is governed by a
|
| +// BSD-style license that can be found in the LICENSE file.
|
| +
|
| +library engine.resolver.element_resolver;
|
| +
|
| +import 'dart:collection';
|
| +
|
| +import 'error.dart';
|
| +import 'scanner.dart' as sc;
|
| +import 'utilities_dart.dart';
|
| +import 'ast.dart';
|
| +import 'element.dart';
|
| +import 'engine.dart';
|
| +import 'resolver.dart';
|
| +
|
| +/**
|
| + * Instances of the class `ElementResolver` are used by instances of [ResolverVisitor]
|
| + * to resolve references within the AST structure to the elements being referenced. The requirements
|
| + * for the element resolver are:
|
| + * <ol>
|
| + * * Every [SimpleIdentifier] should be resolved to the element to which it refers.
|
| + * Specifically:
|
| + * * An identifier within the declaration of that name should resolve to the element being
|
| + * declared.
|
| + * * An identifier denoting a prefix should resolve to the element representing the import that
|
| + * defines the prefix (an [ImportElement]).
|
| + * * An identifier denoting a variable should resolve to the element representing the variable (a
|
| + * [VariableElement]).
|
| + * * An identifier denoting a parameter should resolve to the element representing the parameter
|
| + * (a [ParameterElement]).
|
| + * * An identifier denoting a field should resolve to the element representing the getter or
|
| + * setter being invoked (a [PropertyAccessorElement]).
|
| + * * An identifier denoting the name of a method or function being invoked should resolve to the
|
| + * element representing the method or function (a [ExecutableElement]).
|
| + * * An identifier denoting a label should resolve to the element representing the label (a
|
| + * [LabelElement]).
|
| + * The identifiers within directives are exceptions to this rule and are covered below.
|
| + * * Every node containing a token representing an operator that can be overridden (
|
| + * [BinaryExpression], [PrefixExpression], [PostfixExpression]) should resolve to
|
| + * the element representing the method invoked by that operator (a [MethodElement]).
|
| + * * Every [FunctionExpressionInvocation] should resolve to the element representing the
|
| + * function being invoked (a [FunctionElement]). This will be the same element as that to
|
| + * which the name is resolved if the function has a name, but is provided for those cases where an
|
| + * unnamed function is being invoked.
|
| + * * Every [LibraryDirective] and [PartOfDirective] should resolve to the element
|
| + * representing the library being specified by the directive (a [LibraryElement]) unless, in
|
| + * the case of a part-of directive, the specified library does not exist.
|
| + * * Every [ImportDirective] and [ExportDirective] should resolve to the element
|
| + * representing the library being specified by the directive unless the specified library does not
|
| + * exist (an [ImportElement] or [ExportElement]).
|
| + * * The identifier representing the prefix in an [ImportDirective] should resolve to the
|
| + * element representing the prefix (a [PrefixElement]).
|
| + * * The identifiers in the hide and show combinators in [ImportDirective]s and
|
| + * [ExportDirective]s should resolve to the elements that are being hidden or shown,
|
| + * respectively, unless those names are not defined in the specified library (or the specified
|
| + * library does not exist).
|
| + * * Every [PartDirective] should resolve to the element representing the compilation unit
|
| + * being specified by the string unless the specified compilation unit does not exist (a
|
| + * [CompilationUnitElement]).
|
| + * </ol>
|
| + * Note that AST nodes that would represent elements that are not defined are not resolved to
|
| + * anything. This includes such things as references to undeclared variables (which is an error) and
|
| + * names in hide and show combinators that are not defined in the imported library (which is not an
|
| + * error).
|
| + */
|
| +class ElementResolver extends SimpleAstVisitor<Object> {
|
| + /**
|
| + * Checks whether the given expression is a reference to a class. If it is then the
|
| + * [ClassElement] is returned, otherwise `null` is returned.
|
| + *
|
| + * @param expression the expression to evaluate
|
| + * @return the element representing the class
|
| + */
|
| + static ClassElementImpl getTypeReference(Expression expression) {
|
| + if (expression is Identifier) {
|
| + Element staticElement = expression.staticElement;
|
| + if (staticElement is ClassElementImpl) {
|
| + return staticElement;
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * Helper function for `maybeMergeExecutableElements` that does the actual merging.
|
| + *
|
| + * @param elementArrayToMerge non-empty array of elements to merge.
|
| + * @return
|
| + */
|
| + static ExecutableElement _computeMergedExecutableElement(List<ExecutableElement> elementArrayToMerge) {
|
| + // Flatten methods structurally. Based on
|
| + // [InheritanceManager.computeMergedExecutableElement] and
|
| + // [InheritanceManager.createSyntheticExecutableElement].
|
| + //
|
| + // However, the approach we take here is much simpler, but expected to work
|
| + // well in the common case. It degrades gracefully in the uncommon case,
|
| + // by computing the type [dynamic] for the method, preventing any
|
| + // hints from being generated (TODO: not done yet).
|
| + //
|
| + // The approach is: we require that each [ExecutableElement] has the
|
| + // same shape: the same number of required, optional positional, and optional named
|
| + // parameters, in the same positions, and with the named parameters in the
|
| + // same order. We compute a type by unioning pointwise.
|
| + ExecutableElement e_0 = elementArrayToMerge[0];
|
| + List<ParameterElement> ps_0 = e_0.parameters;
|
| + List<ParameterElementImpl> ps_out = new List<ParameterElementImpl>(ps_0.length);
|
| + for (int j = 0; j < ps_out.length; j++) {
|
| + ps_out[j] = new ParameterElementImpl(ps_0[j].name, 0);
|
| + ps_out[j].synthetic = true;
|
| + ps_out[j].type = ps_0[j].type;
|
| + ps_out[j].parameterKind = ps_0[j].parameterKind;
|
| + }
|
| + DartType r_out = e_0.returnType;
|
| + for (int i = 1; i < elementArrayToMerge.length; i++) {
|
| + ExecutableElement e_i = elementArrayToMerge[i];
|
| + r_out = UnionTypeImpl.union([r_out, e_i.returnType]);
|
| + List<ParameterElement> ps_i = e_i.parameters;
|
| + // Each function must have the same number of params.
|
| + if (ps_0.length != ps_i.length) {
|
| + return null;
|
| + // TODO (collinsn): return an element representing [dynamic] here instead.
|
| + } else {
|
| + // Each function must have the same kind of params, with the same names,
|
| + // in the same order.
|
| + for (int j = 0; j < ps_i.length; j++) {
|
| + if (ps_0[j].parameterKind != ps_i[j].parameterKind || !identical(ps_0[j].name, ps_i[j].name)) {
|
| + return null;
|
| + } else {
|
| + // The output parameter type is the union of the input parameter types.
|
| + ps_out[j].type = UnionTypeImpl.union([ps_out[j].type, ps_i[j].type]);
|
| + }
|
| + }
|
| + }
|
| + }
|
| + // TODO (collinsn): this code should work for functions and methods,
|
| + // so we may want [FunctionElementImpl]
|
| + // instead here in some cases? And then there are constructors and property accessors.
|
| + // Maybe the answer is to create a new subclass of [ExecutableElementImpl] which
|
| + // is used for merged executable elements, in analogy with [MultiplyInheritedMethodElementImpl]
|
| + // and [MultiplyInheritedPropertyAcessorElementImpl].
|
| + ExecutableElementImpl e_out = new MethodElementImpl(e_0.name, 0);
|
| + e_out.synthetic = true;
|
| + e_out.returnType = r_out;
|
| + e_out.parameters = ps_out;
|
| + e_out.type = new FunctionTypeImpl.con1(e_out);
|
| + // Get NPE in [toString()] w/o this.
|
| + e_out.enclosingElement = e_0.enclosingElement;
|
| + return e_out;
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if the given identifier is the return type of a constructor declaration.
|
| + *
|
| + * @return `true` if the given identifier is the return type of a constructor declaration.
|
| + */
|
| + static bool _isConstructorReturnType(SimpleIdentifier identifier) {
|
| + AstNode parent = identifier.parent;
|
| + if (parent is ConstructorDeclaration) {
|
| + return identical(parent.returnType, identifier);
|
| + }
|
| + return false;
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if the given identifier is the return type of a factory constructor.
|
| + *
|
| + * @return `true` if the given identifier is the return type of a factory constructor
|
| + * declaration.
|
| + */
|
| + static bool _isFactoryConstructorReturnType(SimpleIdentifier node) {
|
| + AstNode parent = node.parent;
|
| + if (parent is ConstructorDeclaration) {
|
| + ConstructorDeclaration constructor = parent;
|
| + return identical(constructor.returnType, node) && constructor.factoryKeyword != null;
|
| + }
|
| + return false;
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if the given 'super' expression is used in a valid context.
|
| + *
|
| + * @param node the 'super' expression to analyze
|
| + * @return `true` if the 'super' expression is in a valid context
|
| + */
|
| + static bool _isSuperInValidContext(SuperExpression node) {
|
| + for (AstNode n = node; n != null; n = n.parent) {
|
| + if (n is CompilationUnit) {
|
| + return false;
|
| + }
|
| + if (n is ConstructorDeclaration) {
|
| + ConstructorDeclaration constructor = n as ConstructorDeclaration;
|
| + return constructor.factoryKeyword == null;
|
| + }
|
| + if (n is ConstructorFieldInitializer) {
|
| + return false;
|
| + }
|
| + if (n is MethodDeclaration) {
|
| + MethodDeclaration method = n as MethodDeclaration;
|
| + return !method.isStatic;
|
| + }
|
| + }
|
| + return false;
|
| + }
|
| +
|
| + /**
|
| + * Return a method representing the merge of the given elements. The type of the merged element is
|
| + * the component-wise union of the types of the given elements. If not all input elements have the
|
| + * same shape then [null] is returned.
|
| + *
|
| + * @param elements the `ExecutableElement`s to merge
|
| + * @return an `ExecutableElement` representing the merge of `elements`
|
| + */
|
| + static ExecutableElement _maybeMergeExecutableElements(Set<ExecutableElement> elements) {
|
| + List<ExecutableElement> elementArrayToMerge = new List.from(elements);
|
| + if (elementArrayToMerge.length == 0) {
|
| + return null;
|
| + } else if (elementArrayToMerge.length == 1) {
|
| + // If all methods are equal, don't bother building a new one.
|
| + return elementArrayToMerge[0];
|
| + } else {
|
| + return _computeMergedExecutableElement(elementArrayToMerge);
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * The resolver driving this participant.
|
| + */
|
| + final ResolverVisitor _resolver;
|
| +
|
| + /**
|
| + * The element for the library containing the compilation unit being visited.
|
| + */
|
| + LibraryElement _definingLibrary;
|
| +
|
| + /**
|
| + * A flag indicating whether we should generate hints.
|
| + */
|
| + bool _enableHints = false;
|
| +
|
| + /**
|
| + * The type representing the type 'dynamic'.
|
| + */
|
| + DartType _dynamicType;
|
| +
|
| + /**
|
| + * The type representing the type 'type'.
|
| + */
|
| + DartType _typeType;
|
| +
|
| + /**
|
| + * A utility class for the resolver to answer the question of "what are my subtypes?".
|
| + */
|
| + SubtypeManager _subtypeManager;
|
| +
|
| + /**
|
| + * The object keeping track of which elements have had their types promoted.
|
| + */
|
| + TypePromotionManager _promoteManager;
|
| +
|
| + /**
|
| + * Initialize a newly created visitor to resolve the nodes in a compilation unit.
|
| + *
|
| + * @param resolver the resolver driving this participant
|
| + */
|
| + ElementResolver(this._resolver) {
|
| + this._definingLibrary = _resolver.definingLibrary;
|
| + AnalysisOptions options = _definingLibrary.context.analysisOptions;
|
| + _enableHints = options.hint;
|
| + _dynamicType = _resolver.typeProvider.dynamicType;
|
| + _typeType = _resolver.typeProvider.typeType;
|
| + _subtypeManager = new SubtypeManager();
|
| + _promoteManager = _resolver.promoteManager;
|
| + }
|
| +
|
| + @override
|
| + Object visitAssignmentExpression(AssignmentExpression node) {
|
| + sc.Token operator = node.operator;
|
| + sc.TokenType operatorType = operator.type;
|
| + if (operatorType != sc.TokenType.EQ) {
|
| + operatorType = _operatorFromCompoundAssignment(operatorType);
|
| + Expression leftHandSide = node.leftHandSide;
|
| + if (leftHandSide != null) {
|
| + String methodName = operatorType.lexeme;
|
| + DartType staticType = _getStaticType(leftHandSide);
|
| + MethodElement staticMethod = _lookUpMethod(leftHandSide, staticType, methodName);
|
| + node.staticElement = staticMethod;
|
| + DartType propagatedType = _getPropagatedType(leftHandSide);
|
| + MethodElement propagatedMethod = _lookUpMethod(leftHandSide, propagatedType, methodName);
|
| + node.propagatedElement = propagatedMethod;
|
| + if (_shouldReportMissingMember(staticType, staticMethod)) {
|
| + _recordUndefinedToken(staticType.element, StaticTypeWarningCode.UNDEFINED_METHOD, operator, [methodName, staticType.displayName]);
|
| + } else if (_enableHints && _shouldReportMissingMember(propagatedType, propagatedMethod) && !_memberFoundInSubclass(propagatedType.element, methodName, true, false)) {
|
| + _recordUndefinedToken(propagatedType.element, HintCode.UNDEFINED_METHOD, operator, [methodName, propagatedType.displayName]);
|
| + }
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitBinaryExpression(BinaryExpression node) {
|
| + sc.Token operator = node.operator;
|
| + if (operator.isUserDefinableOperator) {
|
| + Expression leftOperand = node.leftOperand;
|
| + if (leftOperand != null) {
|
| + String methodName = operator.lexeme;
|
| + DartType staticType = _getStaticType(leftOperand);
|
| + MethodElement staticMethod = _lookUpMethod(leftOperand, staticType, methodName);
|
| + node.staticElement = staticMethod;
|
| + DartType propagatedType = _getPropagatedType(leftOperand);
|
| + MethodElement propagatedMethod = _lookUpMethod(leftOperand, propagatedType, methodName);
|
| + node.propagatedElement = propagatedMethod;
|
| + if (_shouldReportMissingMember(staticType, staticMethod)) {
|
| + _recordUndefinedToken(staticType.element, StaticTypeWarningCode.UNDEFINED_OPERATOR, operator, [methodName, staticType.displayName]);
|
| + } else if (_enableHints && _shouldReportMissingMember(propagatedType, propagatedMethod) && !_memberFoundInSubclass(propagatedType.element, methodName, true, false)) {
|
| + _recordUndefinedToken(propagatedType.element, HintCode.UNDEFINED_OPERATOR, operator, [methodName, propagatedType.displayName]);
|
| + }
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitBreakStatement(BreakStatement node) {
|
| + _lookupLabel(node, node.label);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitClassDeclaration(ClassDeclaration node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitClassTypeAlias(ClassTypeAlias node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitCommentReference(CommentReference node) {
|
| + Identifier identifier = node.identifier;
|
| + if (identifier is SimpleIdentifier) {
|
| + SimpleIdentifier simpleIdentifier = identifier;
|
| + Element element = _resolveSimpleIdentifier(simpleIdentifier);
|
| + if (element == null) {
|
| + //
|
| + // This might be a reference to an imported name that is missing the prefix.
|
| + //
|
| + element = _findImportWithoutPrefix(simpleIdentifier);
|
| + if (element is MultiplyDefinedElement) {
|
| + // TODO(brianwilkerson) Report this error?
|
| + element = null;
|
| + }
|
| + }
|
| + if (element == null) {
|
| + // TODO(brianwilkerson) Report this error?
|
| + // resolver.reportError(
|
| + // StaticWarningCode.UNDEFINED_IDENTIFIER,
|
| + // simpleIdentifier,
|
| + // simpleIdentifier.getName());
|
| + } else {
|
| + if (element.library == null || element.library != _definingLibrary) {
|
| + // TODO(brianwilkerson) Report this error?
|
| + }
|
| + simpleIdentifier.staticElement = element;
|
| + if (node.newKeyword != null) {
|
| + if (element is ClassElement) {
|
| + ConstructorElement constructor = (element as ClassElement).unnamedConstructor;
|
| + if (constructor == null) {
|
| + // TODO(brianwilkerson) Report this error.
|
| + } else {
|
| + simpleIdentifier.staticElement = constructor;
|
| + }
|
| + } else {
|
| + // TODO(brianwilkerson) Report this error.
|
| + }
|
| + }
|
| + }
|
| + } else if (identifier is PrefixedIdentifier) {
|
| + PrefixedIdentifier prefixedIdentifier = identifier;
|
| + SimpleIdentifier prefix = prefixedIdentifier.prefix;
|
| + SimpleIdentifier name = prefixedIdentifier.identifier;
|
| + Element element = _resolveSimpleIdentifier(prefix);
|
| + if (element == null) {
|
| + // resolver.reportError(StaticWarningCode.UNDEFINED_IDENTIFIER, prefix, prefix.getName());
|
| + } else {
|
| + if (element is PrefixElement) {
|
| + prefix.staticElement = element;
|
| + // TODO(brianwilkerson) Report this error?
|
| + element = _resolver.nameScope.lookup(identifier, _definingLibrary);
|
| + name.staticElement = element;
|
| + return null;
|
| + }
|
| + LibraryElement library = element.library;
|
| + if (library == null) {
|
| + // TODO(brianwilkerson) We need to understand how the library could ever be null.
|
| + AnalysisEngine.instance.logger.logError("Found element with null library: ${element.name}");
|
| + } else if (library != _definingLibrary) {
|
| + // TODO(brianwilkerson) Report this error.
|
| + }
|
| + name.staticElement = element;
|
| + if (node.newKeyword == null) {
|
| + if (element is ClassElement) {
|
| + Element memberElement = _lookupGetterOrMethod((element as ClassElement).type, name.name);
|
| + if (memberElement == null) {
|
| + memberElement = (element as ClassElement).getNamedConstructor(name.name);
|
| + if (memberElement == null) {
|
| + memberElement = _lookUpSetter(prefix, (element as ClassElement).type, name.name);
|
| + }
|
| + }
|
| + if (memberElement == null) {
|
| + // reportGetterOrSetterNotFound(prefixedIdentifier, name, element.getDisplayName());
|
| + } else {
|
| + name.staticElement = memberElement;
|
| + }
|
| + } else {
|
| + // TODO(brianwilkerson) Report this error.
|
| + }
|
| + } else {
|
| + if (element is ClassElement) {
|
| + ConstructorElement constructor = (element as ClassElement).getNamedConstructor(name.name);
|
| + if (constructor == null) {
|
| + // TODO(brianwilkerson) Report this error.
|
| + } else {
|
| + name.staticElement = constructor;
|
| + }
|
| + } else {
|
| + // TODO(brianwilkerson) Report this error.
|
| + }
|
| + }
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitConstructorDeclaration(ConstructorDeclaration node) {
|
| + super.visitConstructorDeclaration(node);
|
| + ConstructorElement element = node.element;
|
| + if (element is ConstructorElementImpl) {
|
| + ConstructorElementImpl constructorElement = element;
|
| + ConstructorName redirectedNode = node.redirectedConstructor;
|
| + if (redirectedNode != null) {
|
| + // set redirected factory constructor
|
| + ConstructorElement redirectedElement = redirectedNode.staticElement;
|
| + constructorElement.redirectedConstructor = redirectedElement;
|
| + } else {
|
| + // set redirected generative constructor
|
| + for (ConstructorInitializer initializer in node.initializers) {
|
| + if (initializer is RedirectingConstructorInvocation) {
|
| + ConstructorElement redirectedElement = initializer.staticElement;
|
| + constructorElement.redirectedConstructor = redirectedElement;
|
| + }
|
| + }
|
| + }
|
| + _setMetadata(constructorElement, node);
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
|
| + SimpleIdentifier fieldName = node.fieldName;
|
| + ClassElement enclosingClass = _resolver.enclosingClass;
|
| + FieldElement fieldElement = enclosingClass.getField(fieldName.name);
|
| + fieldName.staticElement = fieldElement;
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitConstructorName(ConstructorName node) {
|
| + DartType type = node.type.type;
|
| + if (type != null && type.isDynamic) {
|
| + return null;
|
| + } else if (type is! InterfaceType) {
|
| + // TODO(brianwilkerson) Report these errors.
|
| + // ASTNode parent = node.getParent();
|
| + // if (parent instanceof InstanceCreationExpression) {
|
| + // if (((InstanceCreationExpression) parent).isConst()) {
|
| + // // CompileTimeErrorCode.CONST_WITH_NON_TYPE
|
| + // } else {
|
| + // // StaticWarningCode.NEW_WITH_NON_TYPE
|
| + // }
|
| + // } else {
|
| + // // This is part of a redirecting factory constructor; not sure which error code to use
|
| + // }
|
| + return null;
|
| + }
|
| + // look up ConstructorElement
|
| + ConstructorElement constructor;
|
| + SimpleIdentifier name = node.name;
|
| + InterfaceType interfaceType = type as InterfaceType;
|
| + if (name == null) {
|
| + constructor = interfaceType.lookUpConstructor(null, _definingLibrary);
|
| + } else {
|
| + constructor = interfaceType.lookUpConstructor(name.name, _definingLibrary);
|
| + name.staticElement = constructor;
|
| + }
|
| + node.staticElement = constructor;
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitContinueStatement(ContinueStatement node) {
|
| + _lookupLabel(node, node.label);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitDeclaredIdentifier(DeclaredIdentifier node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitExportDirective(ExportDirective node) {
|
| + ExportElement exportElement = node.element;
|
| + if (exportElement != null) {
|
| + // The element is null when the URI is invalid
|
| + // TODO(brianwilkerson) Figure out whether the element can ever be something other than an
|
| + // ExportElement
|
| + _resolveCombinators(exportElement.exportedLibrary, node.combinators);
|
| + _setMetadata(exportElement, node);
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitFieldFormalParameter(FieldFormalParameter node) {
|
| + _setMetadataForParameter(node.element, node);
|
| + return super.visitFieldFormalParameter(node);
|
| + }
|
| +
|
| + @override
|
| + Object visitFunctionDeclaration(FunctionDeclaration node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
|
| + // TODO(brianwilkerson) Can we ever resolve the function being invoked?
|
| + Expression expression = node.function;
|
| + if (expression is FunctionExpression) {
|
| + FunctionExpression functionExpression = expression;
|
| + ExecutableElement functionElement = functionExpression.element;
|
| + ArgumentList argumentList = node.argumentList;
|
| + List<ParameterElement> parameters = _resolveArgumentsToFunction(false, argumentList, functionElement);
|
| + if (parameters != null) {
|
| + argumentList.correspondingStaticParameters = parameters;
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitFunctionTypeAlias(FunctionTypeAlias node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
|
| + _setMetadataForParameter(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitImportDirective(ImportDirective node) {
|
| + SimpleIdentifier prefixNode = node.prefix;
|
| + if (prefixNode != null) {
|
| + String prefixName = prefixNode.name;
|
| + for (PrefixElement prefixElement in _definingLibrary.prefixes) {
|
| + if (prefixElement.displayName == prefixName) {
|
| + prefixNode.staticElement = prefixElement;
|
| + break;
|
| + }
|
| + }
|
| + }
|
| + ImportElement importElement = node.element;
|
| + if (importElement != null) {
|
| + // The element is null when the URI is invalid
|
| + LibraryElement library = importElement.importedLibrary;
|
| + if (library != null) {
|
| + _resolveCombinators(library, node.combinators);
|
| + }
|
| + _setMetadata(importElement, node);
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitIndexExpression(IndexExpression node) {
|
| + Expression target = node.realTarget;
|
| + DartType staticType = _getStaticType(target);
|
| + DartType propagatedType = _getPropagatedType(target);
|
| + String getterMethodName = sc.TokenType.INDEX.lexeme;
|
| + String setterMethodName = sc.TokenType.INDEX_EQ.lexeme;
|
| + bool isInGetterContext = node.inGetterContext();
|
| + bool isInSetterContext = node.inSetterContext();
|
| + if (isInGetterContext && isInSetterContext) {
|
| + // lookup setter
|
| + MethodElement setterStaticMethod = _lookUpMethod(target, staticType, setterMethodName);
|
| + MethodElement setterPropagatedMethod = _lookUpMethod(target, propagatedType, setterMethodName);
|
| + // set setter element
|
| + node.staticElement = setterStaticMethod;
|
| + node.propagatedElement = setterPropagatedMethod;
|
| + // generate undefined method warning
|
| + _checkForUndefinedIndexOperator(node, target, getterMethodName, setterStaticMethod, setterPropagatedMethod, staticType, propagatedType);
|
| + // lookup getter method
|
| + MethodElement getterStaticMethod = _lookUpMethod(target, staticType, getterMethodName);
|
| + MethodElement getterPropagatedMethod = _lookUpMethod(target, propagatedType, getterMethodName);
|
| + // set getter element
|
| + AuxiliaryElements auxiliaryElements = new AuxiliaryElements(getterStaticMethod, getterPropagatedMethod);
|
| + node.auxiliaryElements = auxiliaryElements;
|
| + // generate undefined method warning
|
| + _checkForUndefinedIndexOperator(node, target, getterMethodName, getterStaticMethod, getterPropagatedMethod, staticType, propagatedType);
|
| + } else if (isInGetterContext) {
|
| + // lookup getter method
|
| + MethodElement staticMethod = _lookUpMethod(target, staticType, getterMethodName);
|
| + MethodElement propagatedMethod = _lookUpMethod(target, propagatedType, getterMethodName);
|
| + // set getter element
|
| + node.staticElement = staticMethod;
|
| + node.propagatedElement = propagatedMethod;
|
| + // generate undefined method warning
|
| + _checkForUndefinedIndexOperator(node, target, getterMethodName, staticMethod, propagatedMethod, staticType, propagatedType);
|
| + } else if (isInSetterContext) {
|
| + // lookup setter method
|
| + MethodElement staticMethod = _lookUpMethod(target, staticType, setterMethodName);
|
| + MethodElement propagatedMethod = _lookUpMethod(target, propagatedType, setterMethodName);
|
| + // set setter element
|
| + node.staticElement = staticMethod;
|
| + node.propagatedElement = propagatedMethod;
|
| + // generate undefined method warning
|
| + _checkForUndefinedIndexOperator(node, target, setterMethodName, staticMethod, propagatedMethod, staticType, propagatedType);
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitInstanceCreationExpression(InstanceCreationExpression node) {
|
| + ConstructorElement invokedConstructor = node.constructorName.staticElement;
|
| + node.staticElement = invokedConstructor;
|
| + ArgumentList argumentList = node.argumentList;
|
| + List<ParameterElement> parameters = _resolveArgumentsToFunction(node.isConst, argumentList, invokedConstructor);
|
| + if (parameters != null) {
|
| + argumentList.correspondingStaticParameters = parameters;
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitLibraryDirective(LibraryDirective node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitMethodDeclaration(MethodDeclaration node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitMethodInvocation(MethodInvocation node) {
|
| + SimpleIdentifier methodName = node.methodName;
|
| + //
|
| + // Synthetic identifiers have been already reported during parsing.
|
| + //
|
| + if (methodName.isSynthetic) {
|
| + return null;
|
| + }
|
| + //
|
| + // We have a method invocation of one of two forms: 'e.m(a1, ..., an)' or 'm(a1, ..., an)'. The
|
| + // first step is to figure out which executable is being invoked, using both the static and the
|
| + // propagated type information.
|
| + //
|
| + Expression target = node.realTarget;
|
| + if (target is SuperExpression && !_isSuperInValidContext(target)) {
|
| + return null;
|
| + }
|
| + Element staticElement;
|
| + Element propagatedElement;
|
| + DartType staticType = null;
|
| + DartType propagatedType = null;
|
| + if (target == null) {
|
| + staticElement = _resolveInvokedElement(methodName);
|
| + propagatedElement = null;
|
| + } else if (methodName.name == FunctionElement.LOAD_LIBRARY_NAME && _isDeferredPrefix(target)) {
|
| + LibraryElement importedLibrary = _getImportedLibrary(target);
|
| + methodName.staticElement = importedLibrary.loadLibraryFunction;
|
| + return null;
|
| + } else {
|
| + staticType = _getStaticType(target);
|
| + propagatedType = _getPropagatedType(target);
|
| + //
|
| + // If this method invocation is of the form 'C.m' where 'C' is a class, then we don't call
|
| + // resolveInvokedElement(..) which walks up the class hierarchy, instead we just look for the
|
| + // member in the type only.
|
| + //
|
| + ClassElementImpl typeReference = getTypeReference(target);
|
| + if (typeReference != null) {
|
| + staticElement = propagatedElement = _resolveElement(typeReference, methodName);
|
| + } else {
|
| + staticElement = _resolveInvokedElementWithTarget(target, staticType, methodName);
|
| + propagatedElement = _resolveInvokedElementWithTarget(target, propagatedType, methodName);
|
| + }
|
| + }
|
| + staticElement = _convertSetterToGetter(staticElement);
|
| + propagatedElement = _convertSetterToGetter(propagatedElement);
|
| + //
|
| + // Record the results.
|
| + //
|
| + methodName.staticElement = staticElement;
|
| + methodName.propagatedElement = propagatedElement;
|
| + ArgumentList argumentList = node.argumentList;
|
| + if (staticElement != null) {
|
| + List<ParameterElement> parameters = _computeCorrespondingParameters(argumentList, staticElement);
|
| + if (parameters != null) {
|
| + argumentList.correspondingStaticParameters = parameters;
|
| + }
|
| + }
|
| + if (propagatedElement != null) {
|
| + List<ParameterElement> parameters = _computeCorrespondingParameters(argumentList, propagatedElement);
|
| + if (parameters != null) {
|
| + argumentList.correspondingPropagatedParameters = parameters;
|
| + }
|
| + }
|
| + //
|
| + // Then check for error conditions.
|
| + //
|
| + ErrorCode errorCode = _checkForInvocationError(target, true, staticElement);
|
| + bool generatedWithTypePropagation = false;
|
| + if (_enableHints && errorCode == null && staticElement == null) {
|
| + // The method lookup may have failed because there were multiple
|
| + // incompatible choices. In this case we don't want to generate a hint.
|
| + if (propagatedElement == null && propagatedType is UnionType) {
|
| + // TODO(collinsn): an improvement here is to make the propagated type of the method call
|
| + // the union of the propagated types of all possible calls.
|
| + if (_lookupMethods(target, propagatedType as UnionType, methodName.name).length > 1) {
|
| + return null;
|
| + }
|
| + }
|
| + errorCode = _checkForInvocationError(target, false, propagatedElement);
|
| + if (identical(errorCode, StaticTypeWarningCode.UNDEFINED_METHOD)) {
|
| + ClassElement classElementContext = null;
|
| + if (target == null) {
|
| + classElementContext = _resolver.enclosingClass;
|
| + } else {
|
| + DartType type = target.bestType;
|
| + if (type != null) {
|
| + if (type.element is ClassElement) {
|
| + classElementContext = type.element as ClassElement;
|
| + }
|
| + }
|
| + }
|
| + if (classElementContext != null) {
|
| + _subtypeManager.ensureLibraryVisited(_definingLibrary);
|
| + HashSet<ClassElement> subtypeElements = _subtypeManager.computeAllSubtypes(classElementContext);
|
| + for (ClassElement subtypeElement in subtypeElements) {
|
| + if (subtypeElement.getMethod(methodName.name) != null) {
|
| + errorCode = null;
|
| + }
|
| + }
|
| + }
|
| + }
|
| + generatedWithTypePropagation = true;
|
| + }
|
| + if (errorCode == null) {
|
| + return null;
|
| + }
|
| + if (identical(errorCode, StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION)) {
|
| + _resolver.reportErrorForNode(StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION, methodName, [methodName.name]);
|
| + } else if (identical(errorCode, StaticTypeWarningCode.UNDEFINED_FUNCTION)) {
|
| + _resolver.reportErrorForNode(StaticTypeWarningCode.UNDEFINED_FUNCTION, methodName, [methodName.name]);
|
| + } else if (identical(errorCode, StaticTypeWarningCode.UNDEFINED_METHOD)) {
|
| + String targetTypeName;
|
| + if (target == null) {
|
| + ClassElement enclosingClass = _resolver.enclosingClass;
|
| + targetTypeName = enclosingClass.displayName;
|
| + ErrorCode proxyErrorCode = (generatedWithTypePropagation ? HintCode.UNDEFINED_METHOD : StaticTypeWarningCode.UNDEFINED_METHOD);
|
| + _recordUndefinedNode(_resolver.enclosingClass, proxyErrorCode, methodName, [methodName.name, targetTypeName]);
|
| + } else {
|
| + // ignore Function "call"
|
| + // (if we are about to create a hint using type propagation, then we can use type
|
| + // propagation here as well)
|
| + DartType targetType = null;
|
| + if (!generatedWithTypePropagation) {
|
| + targetType = _getStaticType(target);
|
| + } else {
|
| + // choose the best type
|
| + targetType = _getPropagatedType(target);
|
| + if (targetType == null) {
|
| + targetType = _getStaticType(target);
|
| + }
|
| + }
|
| + if (targetType != null && targetType.isDartCoreFunction && methodName.name == FunctionElement.CALL_METHOD_NAME) {
|
| + // TODO(brianwilkerson) Can we ever resolve the function being invoked?
|
| + //resolveArgumentsToParameters(node.getArgumentList(), invokedFunction);
|
| + return null;
|
| + }
|
| + targetTypeName = targetType == null ? null : targetType.displayName;
|
| + ErrorCode proxyErrorCode = (generatedWithTypePropagation ? HintCode.UNDEFINED_METHOD : StaticTypeWarningCode.UNDEFINED_METHOD);
|
| + _recordUndefinedNode(targetType.element, proxyErrorCode, methodName, [methodName.name, targetTypeName]);
|
| + }
|
| + } else if (identical(errorCode, StaticTypeWarningCode.UNDEFINED_SUPER_METHOD)) {
|
| + // Generate the type name.
|
| + // The error code will never be generated via type propagation
|
| + DartType targetType = _getStaticType(target);
|
| + if (targetType is InterfaceType && !targetType.isObject) {
|
| + targetType = (targetType as InterfaceType).superclass;
|
| + }
|
| + String targetTypeName = targetType == null ? null : targetType.name;
|
| + _resolver.reportErrorForNode(StaticTypeWarningCode.UNDEFINED_SUPER_METHOD, methodName, [methodName.name, targetTypeName]);
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitPartDirective(PartDirective node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitPartOfDirective(PartOfDirective node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitPostfixExpression(PostfixExpression node) {
|
| + Expression operand = node.operand;
|
| + String methodName = _getPostfixOperator(node);
|
| + DartType staticType = _getStaticType(operand);
|
| + MethodElement staticMethod = _lookUpMethod(operand, staticType, methodName);
|
| + node.staticElement = staticMethod;
|
| + DartType propagatedType = _getPropagatedType(operand);
|
| + MethodElement propagatedMethod = _lookUpMethod(operand, propagatedType, methodName);
|
| + node.propagatedElement = propagatedMethod;
|
| + if (_shouldReportMissingMember(staticType, staticMethod)) {
|
| + _recordUndefinedToken(staticType.element, StaticTypeWarningCode.UNDEFINED_OPERATOR, node.operator, [methodName, staticType.displayName]);
|
| + } else if (_enableHints && _shouldReportMissingMember(propagatedType, propagatedMethod) && !_memberFoundInSubclass(propagatedType.element, methodName, true, false)) {
|
| + _recordUndefinedToken(propagatedType.element, HintCode.UNDEFINED_OPERATOR, node.operator, [methodName, propagatedType.displayName]);
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitPrefixedIdentifier(PrefixedIdentifier node) {
|
| + SimpleIdentifier prefix = node.prefix;
|
| + SimpleIdentifier identifier = node.identifier;
|
| + //
|
| + // First, check the "lib.loadLibrary" case
|
| + //
|
| + if (identifier.name == FunctionElement.LOAD_LIBRARY_NAME && _isDeferredPrefix(prefix)) {
|
| + LibraryElement importedLibrary = _getImportedLibrary(prefix);
|
| + identifier.staticElement = importedLibrary.loadLibraryFunction;
|
| + return null;
|
| + }
|
| + //
|
| + // Check to see whether the prefix is really a prefix.
|
| + //
|
| + Element prefixElement = prefix.staticElement;
|
| + if (prefixElement is PrefixElement) {
|
| + Element element = _resolver.nameScope.lookup(node, _definingLibrary);
|
| + if (element == null && identifier.inSetterContext()) {
|
| + element = _resolver.nameScope.lookup(new ElementResolver_SyntheticIdentifier("${node.name}="), _definingLibrary);
|
| + }
|
| + if (element == null) {
|
| + if (identifier.inSetterContext()) {
|
| + _resolver.reportErrorForNode(StaticWarningCode.UNDEFINED_SETTER, identifier, [identifier.name, prefixElement.name]);
|
| + } else if (node.parent is Annotation) {
|
| + Annotation annotation = node.parent as Annotation;
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.INVALID_ANNOTATION, annotation, []);
|
| + return null;
|
| + } else {
|
| + _resolver.reportErrorForNode(StaticWarningCode.UNDEFINED_GETTER, identifier, [identifier.name, prefixElement.name]);
|
| + }
|
| + return null;
|
| + }
|
| + if (element is PropertyAccessorElement && identifier.inSetterContext()) {
|
| + PropertyInducingElement variable = (element as PropertyAccessorElement).variable;
|
| + if (variable != null) {
|
| + PropertyAccessorElement setter = variable.setter;
|
| + if (setter != null) {
|
| + element = setter;
|
| + }
|
| + }
|
| + }
|
| + // TODO(brianwilkerson) The prefix needs to be resolved to the element for the import that
|
| + // defines the prefix, not the prefix's element.
|
| + identifier.staticElement = element;
|
| + // Validate annotation element.
|
| + if (node.parent is Annotation) {
|
| + Annotation annotation = node.parent as Annotation;
|
| + _resolveAnnotationElement(annotation);
|
| + return null;
|
| + }
|
| + return null;
|
| + }
|
| + // May be annotation, resolve invocation of "const" constructor.
|
| + if (node.parent is Annotation) {
|
| + Annotation annotation = node.parent as Annotation;
|
| + _resolveAnnotationElement(annotation);
|
| + }
|
| + //
|
| + // Otherwise, the prefix is really an expression that happens to be a simple identifier and this
|
| + // is really equivalent to a property access node.
|
| + //
|
| + _resolvePropertyAccess(prefix, identifier);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitPrefixExpression(PrefixExpression node) {
|
| + sc.Token operator = node.operator;
|
| + sc.TokenType operatorType = operator.type;
|
| + if (operatorType.isUserDefinableOperator || operatorType == sc.TokenType.PLUS_PLUS || operatorType == sc.TokenType.MINUS_MINUS) {
|
| + Expression operand = node.operand;
|
| + String methodName = _getPrefixOperator(node);
|
| + DartType staticType = _getStaticType(operand);
|
| + MethodElement staticMethod = _lookUpMethod(operand, staticType, methodName);
|
| + node.staticElement = staticMethod;
|
| + DartType propagatedType = _getPropagatedType(operand);
|
| + MethodElement propagatedMethod = _lookUpMethod(operand, propagatedType, methodName);
|
| + node.propagatedElement = propagatedMethod;
|
| + if (_shouldReportMissingMember(staticType, staticMethod)) {
|
| + _recordUndefinedToken(staticType.element, StaticTypeWarningCode.UNDEFINED_OPERATOR, operator, [methodName, staticType.displayName]);
|
| + } else if (_enableHints && _shouldReportMissingMember(propagatedType, propagatedMethod) && !_memberFoundInSubclass(propagatedType.element, methodName, true, false)) {
|
| + _recordUndefinedToken(propagatedType.element, HintCode.UNDEFINED_OPERATOR, operator, [methodName, propagatedType.displayName]);
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitPropertyAccess(PropertyAccess node) {
|
| + Expression target = node.realTarget;
|
| + if (target is SuperExpression && !_isSuperInValidContext(target)) {
|
| + return null;
|
| + }
|
| + SimpleIdentifier propertyName = node.propertyName;
|
| + _resolvePropertyAccess(target, propertyName);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) {
|
| + ClassElement enclosingClass = _resolver.enclosingClass;
|
| + if (enclosingClass == null) {
|
| + // TODO(brianwilkerson) Report this error.
|
| + return null;
|
| + }
|
| + SimpleIdentifier name = node.constructorName;
|
| + ConstructorElement element;
|
| + if (name == null) {
|
| + element = enclosingClass.unnamedConstructor;
|
| + } else {
|
| + element = enclosingClass.getNamedConstructor(name.name);
|
| + }
|
| + if (element == null) {
|
| + // TODO(brianwilkerson) Report this error and decide what element to associate with the node.
|
| + return null;
|
| + }
|
| + if (name != null) {
|
| + name.staticElement = element;
|
| + }
|
| + node.staticElement = element;
|
| + ArgumentList argumentList = node.argumentList;
|
| + List<ParameterElement> parameters = _resolveArgumentsToFunction(false, argumentList, element);
|
| + if (parameters != null) {
|
| + argumentList.correspondingStaticParameters = parameters;
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitSimpleFormalParameter(SimpleFormalParameter node) {
|
| + _setMetadataForParameter(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitSimpleIdentifier(SimpleIdentifier node) {
|
| + //
|
| + // Synthetic identifiers have been already reported during parsing.
|
| + //
|
| + if (node.isSynthetic) {
|
| + return null;
|
| + }
|
| + //
|
| + // We ignore identifiers that have already been resolved, such as identifiers representing the
|
| + // name in a declaration.
|
| + //
|
| + if (node.staticElement != null) {
|
| + return null;
|
| + }
|
| + //
|
| + // The name dynamic denotes a Type object even though dynamic is not a class.
|
| + //
|
| + if (node.name == _dynamicType.name) {
|
| + node.staticElement = _dynamicType.element;
|
| + node.staticType = _typeType;
|
| + return null;
|
| + }
|
| + //
|
| + // Otherwise, the node should be resolved.
|
| + //
|
| + Element element = _resolveSimpleIdentifier(node);
|
| + ClassElement enclosingClass = _resolver.enclosingClass;
|
| + if (_isFactoryConstructorReturnType(node) && !identical(element, enclosingClass)) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.INVALID_FACTORY_NAME_NOT_A_CLASS, node, []);
|
| + } else if (_isConstructorReturnType(node) && !identical(element, enclosingClass)) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.INVALID_CONSTRUCTOR_NAME, node, []);
|
| + element = null;
|
| + } else if (element == null || (element is PrefixElement && !_isValidAsPrefix(node))) {
|
| + // TODO(brianwilkerson) Recover from this error.
|
| + if (_isConstructorReturnType(node)) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.INVALID_CONSTRUCTOR_NAME, node, []);
|
| + } else if (node.parent is Annotation) {
|
| + Annotation annotation = node.parent as Annotation;
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.INVALID_ANNOTATION, annotation, []);
|
| + } else {
|
| + _recordUndefinedNode(_resolver.enclosingClass, StaticWarningCode.UNDEFINED_IDENTIFIER, node, [node.name]);
|
| + }
|
| + }
|
| + node.staticElement = element;
|
| + if (node.inSetterContext() && node.inGetterContext() && enclosingClass != null) {
|
| + InterfaceType enclosingType = enclosingClass.type;
|
| + AuxiliaryElements auxiliaryElements = new AuxiliaryElements(_lookUpGetter(null, enclosingType, node.name), null);
|
| + node.auxiliaryElements = auxiliaryElements;
|
| + }
|
| + //
|
| + // Validate annotation element.
|
| + //
|
| + if (node.parent is Annotation) {
|
| + Annotation annotation = node.parent as Annotation;
|
| + _resolveAnnotationElement(annotation);
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
|
| + ClassElement enclosingClass = _resolver.enclosingClass;
|
| + if (enclosingClass == null) {
|
| + // TODO(brianwilkerson) Report this error.
|
| + return null;
|
| + }
|
| + InterfaceType superType = enclosingClass.supertype;
|
| + if (superType == null) {
|
| + // TODO(brianwilkerson) Report this error.
|
| + return null;
|
| + }
|
| + SimpleIdentifier name = node.constructorName;
|
| + String superName = name != null ? name.name : null;
|
| + ConstructorElement element = superType.lookUpConstructor(superName, _definingLibrary);
|
| + if (element == null) {
|
| + if (name != null) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.UNDEFINED_CONSTRUCTOR_IN_INITIALIZER, node, [superType.displayName, name]);
|
| + } else {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.UNDEFINED_CONSTRUCTOR_IN_INITIALIZER_DEFAULT, node, [superType.displayName]);
|
| + }
|
| + return null;
|
| + } else {
|
| + if (element.isFactory) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.NON_GENERATIVE_CONSTRUCTOR, node, [element]);
|
| + }
|
| + }
|
| + if (name != null) {
|
| + name.staticElement = element;
|
| + }
|
| + node.staticElement = element;
|
| + ArgumentList argumentList = node.argumentList;
|
| + List<ParameterElement> parameters = _resolveArgumentsToFunction(isInConstConstructor, argumentList, element);
|
| + if (parameters != null) {
|
| + argumentList.correspondingStaticParameters = parameters;
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitSuperExpression(SuperExpression node) {
|
| + if (!_isSuperInValidContext(node)) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.SUPER_IN_INVALID_CONTEXT, node, []);
|
| + }
|
| + return super.visitSuperExpression(node);
|
| + }
|
| +
|
| + @override
|
| + Object visitTypeParameter(TypeParameter node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitVariableDeclaration(VariableDeclaration node) {
|
| + _setMetadata(node.element, node);
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * Generate annotation elements for each of the annotations in the given node list and add them to
|
| + * the given list of elements.
|
| + *
|
| + * @param annotationList the list of elements to which new elements are to be added
|
| + * @param annotations the AST nodes used to generate new elements
|
| + */
|
| + void _addAnnotations(List<ElementAnnotationImpl> annotationList, NodeList<Annotation> annotations) {
|
| + int annotationCount = annotations.length;
|
| + for (int i = 0; i < annotationCount; i++) {
|
| + Annotation annotation = annotations[i];
|
| + Element resolvedElement = annotation.element;
|
| + if (resolvedElement != null) {
|
| + ElementAnnotationImpl elementAnnotation = new ElementAnnotationImpl(resolvedElement);
|
| + annotation.elementAnnotation = elementAnnotation;
|
| + annotationList.add(elementAnnotation);
|
| + }
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Given that we have found code to invoke the given element, return the error code that should be
|
| + * reported, or `null` if no error should be reported.
|
| + *
|
| + * @param target the target of the invocation, or `null` if there was no target
|
| + * @param useStaticContext
|
| + * @param element the element to be invoked
|
| + * @return the error code that should be reported
|
| + */
|
| + ErrorCode _checkForInvocationError(Expression target, bool useStaticContext, Element element) {
|
| + // Prefix is not declared, instead "prefix.id" are declared.
|
| + if (element is PrefixElement) {
|
| + element = null;
|
| + }
|
| + if (element is PropertyAccessorElement) {
|
| + //
|
| + // This is really a function expression invocation.
|
| + //
|
| + // TODO(brianwilkerson) Consider the possibility of re-writing the AST.
|
| + FunctionType getterType = element.type;
|
| + if (getterType != null) {
|
| + DartType returnType = getterType.returnType;
|
| + if (!_isExecutableType(returnType)) {
|
| + return StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION;
|
| + }
|
| + }
|
| + } else if (element is ExecutableElement) {
|
| + return null;
|
| + } else if (element is MultiplyDefinedElement) {
|
| + // The error has already been reported
|
| + return null;
|
| + } else if (element == null && target is SuperExpression) {
|
| + // TODO(jwren) We should split the UNDEFINED_METHOD into two error codes, this one, and
|
| + // a code that describes the situation where the method was found, but it was not
|
| + // accessible from the current library.
|
| + return StaticTypeWarningCode.UNDEFINED_SUPER_METHOD;
|
| + } else {
|
| + //
|
| + // This is really a function expression invocation.
|
| + //
|
| + // TODO(brianwilkerson) Consider the possibility of re-writing the AST.
|
| + if (element is PropertyInducingElement) {
|
| + PropertyAccessorElement getter = element.getter;
|
| + FunctionType getterType = getter.type;
|
| + if (getterType != null) {
|
| + DartType returnType = getterType.returnType;
|
| + if (!_isExecutableType(returnType)) {
|
| + return StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION;
|
| + }
|
| + }
|
| + } else if (element is VariableElement) {
|
| + DartType variableType = element.type;
|
| + if (!_isExecutableType(variableType)) {
|
| + return StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION;
|
| + }
|
| + } else {
|
| + if (target == null) {
|
| + ClassElement enclosingClass = _resolver.enclosingClass;
|
| + if (enclosingClass == null) {
|
| + return StaticTypeWarningCode.UNDEFINED_FUNCTION;
|
| + } else if (element == null) {
|
| + // Proxy-conditional warning, based on state of resolver.getEnclosingClass()
|
| + return StaticTypeWarningCode.UNDEFINED_METHOD;
|
| + } else {
|
| + return StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION;
|
| + }
|
| + } else {
|
| + DartType targetType;
|
| + if (useStaticContext) {
|
| + targetType = _getStaticType(target);
|
| + } else {
|
| + // Compute and use the propagated type, if it is null, then it may be the case that
|
| + // static type is some type, in which the static type should be used.
|
| + targetType = target.bestType;
|
| + }
|
| + if (targetType == null) {
|
| + return StaticTypeWarningCode.UNDEFINED_FUNCTION;
|
| + } else if (!targetType.isDynamic && !targetType.isBottom) {
|
| + // Proxy-conditional warning, based on state of targetType.getElement()
|
| + return StaticTypeWarningCode.UNDEFINED_METHOD;
|
| + }
|
| + }
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * Check that the for some index expression that the method element was resolved, otherwise a
|
| + * [StaticWarningCode#UNDEFINED_OPERATOR] is generated.
|
| + *
|
| + * @param node the index expression to resolve
|
| + * @param target the target of the expression
|
| + * @param methodName the name of the operator associated with the context of using of the given
|
| + * index expression
|
| + * @return `true` if and only if an error code is generated on the passed node
|
| + */
|
| + bool _checkForUndefinedIndexOperator(IndexExpression node, Expression target, String methodName, MethodElement staticMethod, MethodElement propagatedMethod, DartType staticType, DartType propagatedType) {
|
| + bool shouldReportMissingMember_static = _shouldReportMissingMember(staticType, staticMethod);
|
| + bool shouldReportMissingMember_propagated = !shouldReportMissingMember_static && _enableHints && _shouldReportMissingMember(propagatedType, propagatedMethod) && !_memberFoundInSubclass(propagatedType.element, methodName, true, false);
|
| + if (shouldReportMissingMember_static || shouldReportMissingMember_propagated) {
|
| + sc.Token leftBracket = node.leftBracket;
|
| + sc.Token rightBracket = node.rightBracket;
|
| + ErrorCode errorCode = (shouldReportMissingMember_static ? StaticTypeWarningCode.UNDEFINED_OPERATOR : HintCode.UNDEFINED_OPERATOR);
|
| + if (leftBracket == null || rightBracket == null) {
|
| + _recordUndefinedNode(shouldReportMissingMember_static ? staticType.element : propagatedType.element, errorCode, node, [
|
| + methodName,
|
| + shouldReportMissingMember_static ? staticType.displayName : propagatedType.displayName]);
|
| + } else {
|
| + int offset = leftBracket.offset;
|
| + int length = rightBracket.offset - offset + 1;
|
| + _recordUndefinedOffset(shouldReportMissingMember_static ? staticType.element : propagatedType.element, errorCode, offset, length, [
|
| + methodName,
|
| + shouldReportMissingMember_static ? staticType.displayName : propagatedType.displayName]);
|
| + }
|
| + return true;
|
| + }
|
| + return false;
|
| + }
|
| +
|
| + /**
|
| + * Given a list of arguments and the element that will be invoked using those argument, compute
|
| + * the list of parameters that correspond to the list of arguments. Return the parameters that
|
| + * correspond to the arguments, or `null` if no correspondence could be computed.
|
| + *
|
| + * @param argumentList the list of arguments being passed to the element
|
| + * @param executableElement the element that will be invoked with the arguments
|
| + * @return the parameters that correspond to the arguments
|
| + */
|
| + List<ParameterElement> _computeCorrespondingParameters(ArgumentList argumentList, Element element) {
|
| + if (element is PropertyAccessorElement) {
|
| + //
|
| + // This is an invocation of the call method defined on the value returned by the getter.
|
| + //
|
| + FunctionType getterType = element.type;
|
| + if (getterType != null) {
|
| + DartType getterReturnType = getterType.returnType;
|
| + if (getterReturnType is InterfaceType) {
|
| + MethodElement callMethod = getterReturnType.lookUpMethod(FunctionElement.CALL_METHOD_NAME, _definingLibrary);
|
| + if (callMethod != null) {
|
| + return _resolveArgumentsToFunction(false, argumentList, callMethod);
|
| + }
|
| + } else if (getterReturnType is FunctionType) {
|
| + List<ParameterElement> parameters = getterReturnType.parameters;
|
| + return _resolveArgumentsToParameters(false, argumentList, parameters);
|
| + }
|
| + }
|
| + } else if (element is ExecutableElement) {
|
| + return _resolveArgumentsToFunction(false, argumentList, element);
|
| + } else if (element is VariableElement) {
|
| + VariableElement variable = element;
|
| + DartType type = _promoteManager.getStaticType(variable);
|
| + if (type is FunctionType) {
|
| + FunctionType functionType = type;
|
| + List<ParameterElement> parameters = functionType.parameters;
|
| + return _resolveArgumentsToParameters(false, argumentList, parameters);
|
| + } else if (type is InterfaceType) {
|
| + // "call" invocation
|
| + MethodElement callMethod = type.lookUpMethod(FunctionElement.CALL_METHOD_NAME, _definingLibrary);
|
| + if (callMethod != null) {
|
| + List<ParameterElement> parameters = callMethod.parameters;
|
| + return _resolveArgumentsToParameters(false, argumentList, parameters);
|
| + }
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * If the given element is a setter, return the getter associated with it. Otherwise, return the
|
| + * element unchanged.
|
| + *
|
| + * @param element the element to be normalized
|
| + * @return a non-setter element derived from the given element
|
| + */
|
| + Element _convertSetterToGetter(Element element) {
|
| + // TODO(brianwilkerson) Determine whether and why the element could ever be a setter.
|
| + if (element is PropertyAccessorElement) {
|
| + return element.variable.getter;
|
| + }
|
| + return element;
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if the given element is not a proxy.
|
| + *
|
| + * @param element the enclosing element. If null, `true` will be returned.
|
| + * @return `false` iff the passed [Element] is a [ClassElement] that is a proxy
|
| + * or inherits proxy
|
| + * @see ClassElement#isOrInheritsProxy()
|
| + */
|
| + bool _doesntHaveProxy(Element element) => !(element is ClassElement && element.isOrInheritsProxy);
|
| +
|
| + /**
|
| + * Look for any declarations of the given identifier that are imported using a prefix. Return the
|
| + * element that was found, or `null` if the name is not imported using a prefix.
|
| + *
|
| + * @param identifier the identifier that might have been imported using a prefix
|
| + * @return the element that was found
|
| + */
|
| + Element _findImportWithoutPrefix(SimpleIdentifier identifier) {
|
| + Element element = null;
|
| + Scope nameScope = _resolver.nameScope;
|
| + for (ImportElement importElement in _definingLibrary.imports) {
|
| + PrefixElement prefixElement = importElement.prefix;
|
| + if (prefixElement != null) {
|
| + Identifier prefixedIdentifier = new ElementResolver_SyntheticIdentifier("${prefixElement.name}.${identifier.name}");
|
| + Element importedElement = nameScope.lookup(prefixedIdentifier, _definingLibrary);
|
| + if (importedElement != null) {
|
| + if (element == null) {
|
| + element = importedElement;
|
| + } else {
|
| + element = MultiplyDefinedElementImpl.fromElements(_definingLibrary.context, element, importedElement);
|
| + }
|
| + }
|
| + }
|
| + }
|
| + return element;
|
| + }
|
| +
|
| + /**
|
| + * Assuming that the given expression is a prefix for a deferred import, return the library that
|
| + * is being imported.
|
| + *
|
| + * @param expression the expression representing the deferred import's prefix
|
| + * @return the library that is being imported by the import associated with the prefix
|
| + */
|
| + LibraryElement _getImportedLibrary(Expression expression) {
|
| + PrefixElement prefixElement = (expression as SimpleIdentifier).staticElement as PrefixElement;
|
| + List<ImportElement> imports = prefixElement.enclosingElement.getImportsWithPrefix(prefixElement);
|
| + return imports[0].importedLibrary;
|
| + }
|
| +
|
| + /**
|
| + * Return the name of the method invoked by the given postfix expression.
|
| + *
|
| + * @param node the postfix expression being invoked
|
| + * @return the name of the method invoked by the expression
|
| + */
|
| + String _getPostfixOperator(PostfixExpression node) => (node.operator.type == sc.TokenType.PLUS_PLUS) ? sc.TokenType.PLUS.lexeme : sc.TokenType.MINUS.lexeme;
|
| +
|
| + /**
|
| + * Return the name of the method invoked by the given postfix expression.
|
| + *
|
| + * @param node the postfix expression being invoked
|
| + * @return the name of the method invoked by the expression
|
| + */
|
| + String _getPrefixOperator(PrefixExpression node) {
|
| + sc.Token operator = node.operator;
|
| + sc.TokenType operatorType = operator.type;
|
| + if (operatorType == sc.TokenType.PLUS_PLUS) {
|
| + return sc.TokenType.PLUS.lexeme;
|
| + } else if (operatorType == sc.TokenType.MINUS_MINUS) {
|
| + return sc.TokenType.MINUS.lexeme;
|
| + } else if (operatorType == sc.TokenType.MINUS) {
|
| + return "unary-";
|
| + } else {
|
| + return operator.lexeme;
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Return the propagated type of the given expression that is to be used for type analysis.
|
| + *
|
| + * @param expression the expression whose type is to be returned
|
| + * @return the type of the given expression
|
| + */
|
| + DartType _getPropagatedType(Expression expression) {
|
| + DartType propagatedType = _resolveTypeParameter(expression.propagatedType);
|
| + if (propagatedType is FunctionType) {
|
| + //
|
| + // All function types are subtypes of 'Function', which is itself a subclass of 'Object'.
|
| + //
|
| + propagatedType = _resolver.typeProvider.functionType;
|
| + }
|
| + return propagatedType;
|
| + }
|
| +
|
| + /**
|
| + * Return the static type of the given expression that is to be used for type analysis.
|
| + *
|
| + * @param expression the expression whose type is to be returned
|
| + * @return the type of the given expression
|
| + */
|
| + DartType _getStaticType(Expression expression) {
|
| + if (expression is NullLiteral) {
|
| + return _resolver.typeProvider.bottomType;
|
| + }
|
| + DartType staticType = _resolveTypeParameter(expression.staticType);
|
| + if (staticType is FunctionType) {
|
| + //
|
| + // All function types are subtypes of 'Function', which is itself a subclass of 'Object'.
|
| + //
|
| + staticType = _resolver.typeProvider.functionType;
|
| + }
|
| + return staticType;
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if the given expression is a prefix for a deferred import.
|
| + *
|
| + * @param expression the expression being tested
|
| + * @return `true` if the given expression is a prefix for a deferred import
|
| + */
|
| + bool _isDeferredPrefix(Expression expression) {
|
| + if (expression is! SimpleIdentifier) {
|
| + return false;
|
| + }
|
| + Element element = (expression as SimpleIdentifier).staticElement;
|
| + if (element is! PrefixElement) {
|
| + return false;
|
| + }
|
| + PrefixElement prefixElement = element as PrefixElement;
|
| + List<ImportElement> imports = prefixElement.enclosingElement.getImportsWithPrefix(prefixElement);
|
| + if (imports.length != 1) {
|
| + return false;
|
| + }
|
| + return imports[0].isDeferred;
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if the given type represents an object that could be invoked using the call
|
| + * operator '()'.
|
| + *
|
| + * @param type the type being tested
|
| + * @return `true` if the given type represents an object that could be invoked
|
| + */
|
| + bool _isExecutableType(DartType type) {
|
| + if (type.isDynamic || (type is FunctionType) || type.isDartCoreFunction || type.isObject) {
|
| + return true;
|
| + } else if (type is InterfaceType) {
|
| + ClassElement classElement = type.element;
|
| + // 16078 from Gilad: If the type is a Functor with the @proxy annotation, treat it as an
|
| + // executable type.
|
| + // example code: NonErrorResolverTest.test_invocationOfNonFunction_proxyOnFunctionClass()
|
| + if (classElement.isProxy && type.isSubtypeOf(_resolver.typeProvider.functionType)) {
|
| + return true;
|
| + }
|
| + MethodElement methodElement = classElement.lookUpMethod(FunctionElement.CALL_METHOD_NAME, _definingLibrary);
|
| + return methodElement != null;
|
| + }
|
| + return false;
|
| + }
|
| +
|
| + /**
|
| + * @return `true` iff current enclosing function is constant constructor declaration.
|
| + */
|
| + bool get isInConstConstructor {
|
| + ExecutableElement function = _resolver.enclosingFunction;
|
| + if (function is ConstructorElement) {
|
| + return function.isConst;
|
| + }
|
| + return false;
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if the given element is a static element.
|
| + *
|
| + * @param element the element being tested
|
| + * @return `true` if the given element is a static element
|
| + */
|
| + bool _isStatic(Element element) {
|
| + if (element is ExecutableElement) {
|
| + return element.isStatic;
|
| + } else if (element is PropertyInducingElement) {
|
| + return element.isStatic;
|
| + }
|
| + return false;
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if the given node can validly be resolved to a prefix:
|
| + * * it is the prefix in an import directive, or
|
| + * * it is the prefix in a prefixed identifier.
|
| + *
|
| + * @param node the node being tested
|
| + * @return `true` if the given node is the prefix in an import directive
|
| + */
|
| + bool _isValidAsPrefix(SimpleIdentifier node) {
|
| + AstNode parent = node.parent;
|
| + if (parent is ImportDirective) {
|
| + return identical(parent.prefix, node);
|
| + } else if (parent is PrefixedIdentifier) {
|
| + return true;
|
| + } else if (parent is MethodInvocation) {
|
| + return identical(parent.target, node);
|
| + }
|
| + return false;
|
| + }
|
| +
|
| + /**
|
| + * Look up the getter with the given name in the given type. Return the element representing the
|
| + * getter that was found, or `null` if there is no getter with the given name.
|
| + *
|
| + * @param target the target of the invocation, or `null` if there is no target
|
| + * @param type the type in which the getter is defined
|
| + * @param getterName the name of the getter being looked up
|
| + * @return the element representing the getter that was found
|
| + */
|
| + PropertyAccessorElement _lookUpGetter(Expression target, DartType type, String getterName) {
|
| + type = _resolveTypeParameter(type);
|
| + if (type is InterfaceType) {
|
| + InterfaceType interfaceType = type;
|
| + PropertyAccessorElement accessor;
|
| + if (target is SuperExpression) {
|
| + accessor = interfaceType.lookUpGetterInSuperclass(getterName, _definingLibrary);
|
| + } else {
|
| + accessor = interfaceType.lookUpGetter(getterName, _definingLibrary);
|
| + }
|
| + if (accessor != null) {
|
| + return accessor;
|
| + }
|
| + return _lookUpGetterInInterfaces(interfaceType, false, getterName, new HashSet<ClassElement>());
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * Look up the getter with the given name in the interfaces implemented by the given type, either
|
| + * directly or indirectly. Return the element representing the getter that was found, or
|
| + * `null` if there is no getter with the given name.
|
| + *
|
| + * @param targetType the type in which the getter might be defined
|
| + * @param includeTargetType `true` if the search should include the target type
|
| + * @param getterName the name of the getter being looked up
|
| + * @param visitedInterfaces a set containing all of the interfaces that have been examined, used
|
| + * to prevent infinite recursion and to optimize the search
|
| + * @return the element representing the getter that was found
|
| + */
|
| + PropertyAccessorElement _lookUpGetterInInterfaces(InterfaceType targetType, bool includeTargetType, String getterName, HashSet<ClassElement> visitedInterfaces) {
|
| + // TODO(brianwilkerson) This isn't correct. Section 8.1.1 of the specification (titled
|
| + // "Inheritance and Overriding" under "Interfaces") describes a much more complex scheme for
|
| + // finding the inherited member. We need to follow that scheme. The code below should cover the
|
| + // 80% case.
|
| + ClassElement targetClass = targetType.element;
|
| + if (visitedInterfaces.contains(targetClass)) {
|
| + return null;
|
| + }
|
| + visitedInterfaces.add(targetClass);
|
| + if (includeTargetType) {
|
| + PropertyAccessorElement getter = targetType.getGetter(getterName);
|
| + if (getter != null && getter.isAccessibleIn(_definingLibrary)) {
|
| + return getter;
|
| + }
|
| + }
|
| + for (InterfaceType interfaceType in targetType.interfaces) {
|
| + PropertyAccessorElement getter = _lookUpGetterInInterfaces(interfaceType, true, getterName, visitedInterfaces);
|
| + if (getter != null) {
|
| + return getter;
|
| + }
|
| + }
|
| + for (InterfaceType mixinType in targetType.mixins) {
|
| + PropertyAccessorElement getter = _lookUpGetterInInterfaces(mixinType, true, getterName, visitedInterfaces);
|
| + if (getter != null) {
|
| + return getter;
|
| + }
|
| + }
|
| + InterfaceType superclass = targetType.superclass;
|
| + if (superclass == null) {
|
| + return null;
|
| + }
|
| + return _lookUpGetterInInterfaces(superclass, true, getterName, visitedInterfaces);
|
| + }
|
| +
|
| + /**
|
| + * Look up the method or getter with the given name in the given type. Return the element
|
| + * representing the method or getter that was found, or `null` if there is no method or
|
| + * getter with the given name.
|
| + *
|
| + * @param type the type in which the method or getter is defined
|
| + * @param memberName the name of the method or getter being looked up
|
| + * @return the element representing the method or getter that was found
|
| + */
|
| + ExecutableElement _lookupGetterOrMethod(DartType type, String memberName) {
|
| + type = _resolveTypeParameter(type);
|
| + if (type is InterfaceType) {
|
| + InterfaceType interfaceType = type;
|
| + ExecutableElement member = interfaceType.lookUpMethod(memberName, _definingLibrary);
|
| + if (member != null) {
|
| + return member;
|
| + }
|
| + member = interfaceType.lookUpGetter(memberName, _definingLibrary);
|
| + if (member != null) {
|
| + return member;
|
| + }
|
| + return _lookUpGetterOrMethodInInterfaces(interfaceType, false, memberName, new HashSet<ClassElement>());
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * Look up the method or getter with the given name in the interfaces implemented by the given
|
| + * type, either directly or indirectly. Return the element representing the method or getter that
|
| + * was found, or `null` if there is no method or getter with the given name.
|
| + *
|
| + * @param targetType the type in which the method or getter might be defined
|
| + * @param includeTargetType `true` if the search should include the target type
|
| + * @param memberName the name of the method or getter being looked up
|
| + * @param visitedInterfaces a set containing all of the interfaces that have been examined, used
|
| + * to prevent infinite recursion and to optimize the search
|
| + * @return the element representing the method or getter that was found
|
| + */
|
| + ExecutableElement _lookUpGetterOrMethodInInterfaces(InterfaceType targetType, bool includeTargetType, String memberName, HashSet<ClassElement> visitedInterfaces) {
|
| + // TODO(brianwilkerson) This isn't correct. Section 8.1.1 of the specification (titled
|
| + // "Inheritance and Overriding" under "Interfaces") describes a much more complex scheme for
|
| + // finding the inherited member. We need to follow that scheme. The code below should cover the
|
| + // 80% case.
|
| + ClassElement targetClass = targetType.element;
|
| + if (visitedInterfaces.contains(targetClass)) {
|
| + return null;
|
| + }
|
| + visitedInterfaces.add(targetClass);
|
| + if (includeTargetType) {
|
| + ExecutableElement member = targetType.getMethod(memberName);
|
| + if (member != null) {
|
| + return member;
|
| + }
|
| + member = targetType.getGetter(memberName);
|
| + if (member != null) {
|
| + return member;
|
| + }
|
| + }
|
| + for (InterfaceType interfaceType in targetType.interfaces) {
|
| + ExecutableElement member = _lookUpGetterOrMethodInInterfaces(interfaceType, true, memberName, visitedInterfaces);
|
| + if (member != null) {
|
| + return member;
|
| + }
|
| + }
|
| + for (InterfaceType mixinType in targetType.mixins) {
|
| + ExecutableElement member = _lookUpGetterOrMethodInInterfaces(mixinType, true, memberName, visitedInterfaces);
|
| + if (member != null) {
|
| + return member;
|
| + }
|
| + }
|
| + InterfaceType superclass = targetType.superclass;
|
| + if (superclass == null) {
|
| + return null;
|
| + }
|
| + return _lookUpGetterOrMethodInInterfaces(superclass, true, memberName, visitedInterfaces);
|
| + }
|
| +
|
| + /**
|
| + * Find the element corresponding to the given label node in the current label scope.
|
| + *
|
| + * @param parentNode the node containing the given label
|
| + * @param labelNode the node representing the label being looked up
|
| + * @return the element corresponding to the given label node in the current scope
|
| + */
|
| + LabelElementImpl _lookupLabel(AstNode parentNode, SimpleIdentifier labelNode) {
|
| + LabelScope labelScope = _resolver.labelScope;
|
| + LabelElementImpl labelElement = null;
|
| + if (labelNode == null) {
|
| + if (labelScope == null) {
|
| + // TODO(brianwilkerson) Do we need to report this error, or is this condition always caught in the parser?
|
| + // reportError(ResolverErrorCode.BREAK_OUTSIDE_LOOP);
|
| + } else {
|
| + labelElement = labelScope.lookup(LabelScope.EMPTY_LABEL) as LabelElementImpl;
|
| + if (labelElement == null) {
|
| + // TODO(brianwilkerson) Do we need to report this error, or is this condition always caught in the parser?
|
| + // reportError(ResolverErrorCode.BREAK_OUTSIDE_LOOP);
|
| + }
|
| + //
|
| + // The label element that was returned was a marker for look-up and isn't stored in the
|
| + // element model.
|
| + //
|
| + labelElement = null;
|
| + }
|
| + } else {
|
| + if (labelScope == null) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.LABEL_UNDEFINED, labelNode, [labelNode.name]);
|
| + } else {
|
| + labelElement = labelScope.lookup(labelNode.name) as LabelElementImpl;
|
| + if (labelElement == null) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.LABEL_UNDEFINED, labelNode, [labelNode.name]);
|
| + } else {
|
| + labelNode.staticElement = labelElement;
|
| + }
|
| + }
|
| + }
|
| + if (labelElement != null) {
|
| + ExecutableElement labelContainer = labelElement.getAncestor((element) => element is ExecutableElement);
|
| + if (!identical(labelContainer, _resolver.enclosingFunction)) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.LABEL_IN_OUTER_SCOPE, labelNode, [labelNode.name]);
|
| + labelElement = null;
|
| + }
|
| + }
|
| + return labelElement;
|
| + }
|
| +
|
| + /**
|
| + * Look up the method with the given name in the given type. Return the element representing the
|
| + * method that was found, or `null` if there is no method with the given name.
|
| + *
|
| + * @param target the target of the invocation, or `null` if there is no target
|
| + * @param type the type in which the method is defined
|
| + * @param methodName the name of the method being looked up
|
| + * @return the element representing the method that was found
|
| + */
|
| + MethodElement _lookUpMethod(Expression target, DartType type, String methodName) {
|
| + type = _resolveTypeParameter(type);
|
| + if (type is InterfaceType) {
|
| + InterfaceType interfaceType = type;
|
| + MethodElement method;
|
| + if (target is SuperExpression) {
|
| + method = interfaceType.lookUpMethodInSuperclass(methodName, _definingLibrary);
|
| + } else {
|
| + method = interfaceType.lookUpMethod(methodName, _definingLibrary);
|
| + }
|
| + if (method != null) {
|
| + return method;
|
| + }
|
| + return _lookUpMethodInInterfaces(interfaceType, false, methodName, new HashSet<ClassElement>());
|
| + } else if (type is UnionType) {
|
| + // TODO (collinsn): I want [computeMergedExecutableElement] to be general
|
| + // and work with functions, methods, constructors, and property accessors. However,
|
| + // I won't be able to assume it returns [MethodElement] here then.
|
| + return _maybeMergeExecutableElements(_lookupMethods(target, type, methodName)) as MethodElement;
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * Look up the method with the given name in the interfaces implemented by the given type, either
|
| + * directly or indirectly. Return the element representing the method that was found, or
|
| + * `null` if there is no method with the given name.
|
| + *
|
| + * @param targetType the type in which the member might be defined
|
| + * @param includeTargetType `true` if the search should include the target type
|
| + * @param methodName the name of the method being looked up
|
| + * @param visitedInterfaces a set containing all of the interfaces that have been examined, used
|
| + * to prevent infinite recursion and to optimize the search
|
| + * @return the element representing the method that was found
|
| + */
|
| + MethodElement _lookUpMethodInInterfaces(InterfaceType targetType, bool includeTargetType, String methodName, HashSet<ClassElement> visitedInterfaces) {
|
| + // TODO(brianwilkerson) This isn't correct. Section 8.1.1 of the specification (titled
|
| + // "Inheritance and Overriding" under "Interfaces") describes a much more complex scheme for
|
| + // finding the inherited member. We need to follow that scheme. The code below should cover the
|
| + // 80% case.
|
| + ClassElement targetClass = targetType.element;
|
| + if (visitedInterfaces.contains(targetClass)) {
|
| + return null;
|
| + }
|
| + visitedInterfaces.add(targetClass);
|
| + if (includeTargetType) {
|
| + MethodElement method = targetType.getMethod(methodName);
|
| + if (method != null && method.isAccessibleIn(_definingLibrary)) {
|
| + return method;
|
| + }
|
| + }
|
| + for (InterfaceType interfaceType in targetType.interfaces) {
|
| + MethodElement method = _lookUpMethodInInterfaces(interfaceType, true, methodName, visitedInterfaces);
|
| + if (method != null) {
|
| + return method;
|
| + }
|
| + }
|
| + for (InterfaceType mixinType in targetType.mixins) {
|
| + MethodElement method = _lookUpMethodInInterfaces(mixinType, true, methodName, visitedInterfaces);
|
| + if (method != null) {
|
| + return method;
|
| + }
|
| + }
|
| + InterfaceType superclass = targetType.superclass;
|
| + if (superclass == null) {
|
| + return null;
|
| + }
|
| + return _lookUpMethodInInterfaces(superclass, true, methodName, visitedInterfaces);
|
| + }
|
| +
|
| + /**
|
| + * Look up all methods of a given name defined on a union type.
|
| + *
|
| + * @param target
|
| + * @param type
|
| + * @param methodName
|
| + * @return all methods named `methodName` defined on the union type `type`.
|
| + */
|
| + Set<ExecutableElement> _lookupMethods(Expression target, UnionType type, String methodName) {
|
| + Set<ExecutableElement> methods = new HashSet<ExecutableElement>();
|
| + bool allElementsHaveMethod = true;
|
| + for (DartType t in type.elements) {
|
| + MethodElement m = _lookUpMethod(target, t, methodName);
|
| + if (m != null) {
|
| + methods.add(m);
|
| + } else {
|
| + allElementsHaveMethod = false;
|
| + }
|
| + }
|
| + // For strict union types we require that all types in the union define the method.
|
| + if (AnalysisEngine.instance.strictUnionTypes) {
|
| + if (allElementsHaveMethod) {
|
| + return methods;
|
| + } else {
|
| + return new Set<ExecutableElement>();
|
| + }
|
| + } else {
|
| + return methods;
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Look up the setter with the given name in the given type. Return the element representing the
|
| + * setter that was found, or `null` if there is no setter with the given name.
|
| + *
|
| + * @param target the target of the invocation, or `null` if there is no target
|
| + * @param type the type in which the setter is defined
|
| + * @param setterName the name of the setter being looked up
|
| + * @return the element representing the setter that was found
|
| + */
|
| + PropertyAccessorElement _lookUpSetter(Expression target, DartType type, String setterName) {
|
| + type = _resolveTypeParameter(type);
|
| + if (type is InterfaceType) {
|
| + InterfaceType interfaceType = type;
|
| + PropertyAccessorElement accessor;
|
| + if (target is SuperExpression) {
|
| + accessor = interfaceType.lookUpSetterInSuperclass(setterName, _definingLibrary);
|
| + } else {
|
| + accessor = interfaceType.lookUpSetter(setterName, _definingLibrary);
|
| + }
|
| + if (accessor != null) {
|
| + return accessor;
|
| + }
|
| + return _lookUpSetterInInterfaces(interfaceType, false, setterName, new HashSet<ClassElement>());
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * Look up the setter with the given name in the interfaces implemented by the given type, either
|
| + * directly or indirectly. Return the element representing the setter that was found, or
|
| + * `null` if there is no setter with the given name.
|
| + *
|
| + * @param targetType the type in which the setter might be defined
|
| + * @param includeTargetType `true` if the search should include the target type
|
| + * @param setterName the name of the setter being looked up
|
| + * @param visitedInterfaces a set containing all of the interfaces that have been examined, used
|
| + * to prevent infinite recursion and to optimize the search
|
| + * @return the element representing the setter that was found
|
| + */
|
| + PropertyAccessorElement _lookUpSetterInInterfaces(InterfaceType targetType, bool includeTargetType, String setterName, HashSet<ClassElement> visitedInterfaces) {
|
| + // TODO(brianwilkerson) This isn't correct. Section 8.1.1 of the specification (titled
|
| + // "Inheritance and Overriding" under "Interfaces") describes a much more complex scheme for
|
| + // finding the inherited member. We need to follow that scheme. The code below should cover the
|
| + // 80% case.
|
| + ClassElement targetClass = targetType.element;
|
| + if (visitedInterfaces.contains(targetClass)) {
|
| + return null;
|
| + }
|
| + visitedInterfaces.add(targetClass);
|
| + if (includeTargetType) {
|
| + PropertyAccessorElement setter = targetType.getSetter(setterName);
|
| + if (setter != null && setter.isAccessibleIn(_definingLibrary)) {
|
| + return setter;
|
| + }
|
| + }
|
| + for (InterfaceType interfaceType in targetType.interfaces) {
|
| + PropertyAccessorElement setter = _lookUpSetterInInterfaces(interfaceType, true, setterName, visitedInterfaces);
|
| + if (setter != null) {
|
| + return setter;
|
| + }
|
| + }
|
| + for (InterfaceType mixinType in targetType.mixins) {
|
| + PropertyAccessorElement setter = _lookUpSetterInInterfaces(mixinType, true, setterName, visitedInterfaces);
|
| + if (setter != null) {
|
| + return setter;
|
| + }
|
| + }
|
| + InterfaceType superclass = targetType.superclass;
|
| + if (superclass == null) {
|
| + return null;
|
| + }
|
| + return _lookUpSetterInInterfaces(superclass, true, setterName, visitedInterfaces);
|
| + }
|
| +
|
| + /**
|
| + * Given some class element, this method uses [subtypeManager] to find the set of all
|
| + * subtypes; the subtypes are then searched for a member (method, getter, or setter), that matches
|
| + * a passed
|
| + *
|
| + * @param element the class element to search the subtypes of, if a non-ClassElement element is
|
| + * passed, then `false` is returned
|
| + * @param memberName the member name to search for
|
| + * @param asMethod `true` if the methods should be searched for in the subtypes
|
| + * @param asAccessor `true` if the accessors (getters and setters) should be searched for in
|
| + * the subtypes
|
| + * @return `true` if and only if the passed memberName was found in a subtype
|
| + */
|
| + bool _memberFoundInSubclass(Element element, String memberName, bool asMethod, bool asAccessor) {
|
| + if (element is ClassElement) {
|
| + _subtypeManager.ensureLibraryVisited(_definingLibrary);
|
| + HashSet<ClassElement> subtypeElements = _subtypeManager.computeAllSubtypes(element);
|
| + for (ClassElement subtypeElement in subtypeElements) {
|
| + if (asMethod && subtypeElement.getMethod(memberName) != null) {
|
| + return true;
|
| + } else if (asAccessor && (subtypeElement.getGetter(memberName) != null || subtypeElement.getSetter(memberName) != null)) {
|
| + return true;
|
| + }
|
| + }
|
| + }
|
| + return false;
|
| + }
|
| +
|
| + /**
|
| + * Return the binary operator that is invoked by the given compound assignment operator.
|
| + *
|
| + * @param operator the assignment operator being mapped
|
| + * @return the binary operator that invoked by the given assignment operator
|
| + */
|
| + sc.TokenType _operatorFromCompoundAssignment(sc.TokenType operator) {
|
| + while (true) {
|
| + if (operator == sc.TokenType.AMPERSAND_EQ) {
|
| + return sc.TokenType.AMPERSAND;
|
| + } else if (operator == sc.TokenType.BAR_EQ) {
|
| + return sc.TokenType.BAR;
|
| + } else if (operator == sc.TokenType.CARET_EQ) {
|
| + return sc.TokenType.CARET;
|
| + } else if (operator == sc.TokenType.GT_GT_EQ) {
|
| + return sc.TokenType.GT_GT;
|
| + } else if (operator == sc.TokenType.LT_LT_EQ) {
|
| + return sc.TokenType.LT_LT;
|
| + } else if (operator == sc.TokenType.MINUS_EQ) {
|
| + return sc.TokenType.MINUS;
|
| + } else if (operator == sc.TokenType.PERCENT_EQ) {
|
| + return sc.TokenType.PERCENT;
|
| + } else if (operator == sc.TokenType.PLUS_EQ) {
|
| + return sc.TokenType.PLUS;
|
| + } else if (operator == sc.TokenType.SLASH_EQ) {
|
| + return sc.TokenType.SLASH;
|
| + } else if (operator == sc.TokenType.STAR_EQ) {
|
| + return sc.TokenType.STAR;
|
| + } else if (operator == sc.TokenType.TILDE_SLASH_EQ) {
|
| + return sc.TokenType.TILDE_SLASH;
|
| + } else {
|
| + // Internal error: Unmapped assignment operator.
|
| + AnalysisEngine.instance.logger.logError("Failed to map ${operator.lexeme} to it's corresponding operator");
|
| + return operator;
|
| + }
|
| + break;
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Record that the given node is undefined, causing an error to be reported if appropriate.
|
| + *
|
| + * @param declaringElement the element inside which no declaration was found. If this element is a
|
| + * proxy, no error will be reported. If null, then an error will always be reported.
|
| + * @param errorCode the error code to report.
|
| + * @param node the node which is undefined.
|
| + * @param arguments arguments to the error message.
|
| + */
|
| + void _recordUndefinedNode(Element declaringElement, ErrorCode errorCode, AstNode node, List<Object> arguments) {
|
| + if (_doesntHaveProxy(declaringElement)) {
|
| + _resolver.reportErrorForNode(errorCode, node, arguments);
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Record that the given offset/length is undefined, causing an error to be reported if
|
| + * appropriate.
|
| + *
|
| + * @param declaringElement the element inside which no declaration was found. If this element is a
|
| + * proxy, no error will be reported. If null, then an error will always be reported.
|
| + * @param errorCode the error code to report.
|
| + * @param offset the offset to the text which is undefined.
|
| + * @param length the length of the text which is undefined.
|
| + * @param arguments arguments to the error message.
|
| + */
|
| + void _recordUndefinedOffset(Element declaringElement, ErrorCode errorCode, int offset, int length, List<Object> arguments) {
|
| + if (_doesntHaveProxy(declaringElement)) {
|
| + _resolver.reportErrorForOffset(errorCode, offset, length, arguments);
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Record that the given token is undefined, causing an error to be reported if appropriate.
|
| + *
|
| + * @param declaringElement the element inside which no declaration was found. If this element is a
|
| + * proxy, no error will be reported. If null, then an error will always be reported.
|
| + * @param errorCode the error code to report.
|
| + * @param token the token which is undefined.
|
| + * @param arguments arguments to the error message.
|
| + */
|
| + void _recordUndefinedToken(Element declaringElement, ErrorCode errorCode, sc.Token token, List<Object> arguments) {
|
| + if (_doesntHaveProxy(declaringElement)) {
|
| + _resolver.reportErrorForToken(errorCode, token, arguments);
|
| + }
|
| + }
|
| +
|
| + void _resolveAnnotationConstructorInvocationArguments(Annotation annotation, ConstructorElement constructor) {
|
| + ArgumentList argumentList = annotation.arguments;
|
| + // error will be reported in ConstantVerifier
|
| + if (argumentList == null) {
|
| + return;
|
| + }
|
| + // resolve arguments to parameters
|
| + List<ParameterElement> parameters = _resolveArgumentsToFunction(true, argumentList, constructor);
|
| + if (parameters != null) {
|
| + argumentList.correspondingStaticParameters = parameters;
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Continues resolution of the given [Annotation].
|
| + *
|
| + * @param annotation the [Annotation] to resolve
|
| + */
|
| + void _resolveAnnotationElement(Annotation annotation) {
|
| + SimpleIdentifier nameNode1;
|
| + SimpleIdentifier nameNode2;
|
| + {
|
| + Identifier annName = annotation.name;
|
| + if (annName is PrefixedIdentifier) {
|
| + PrefixedIdentifier prefixed = annName;
|
| + nameNode1 = prefixed.prefix;
|
| + nameNode2 = prefixed.identifier;
|
| + } else {
|
| + nameNode1 = annName as SimpleIdentifier;
|
| + nameNode2 = null;
|
| + }
|
| + }
|
| + SimpleIdentifier nameNode3 = annotation.constructorName;
|
| + ConstructorElement constructor = null;
|
| + //
|
| + // CONST or Class(args)
|
| + //
|
| + if (nameNode1 != null && nameNode2 == null && nameNode3 == null) {
|
| + Element element1 = nameNode1.staticElement;
|
| + // CONST
|
| + if (element1 is PropertyAccessorElement) {
|
| + _resolveAnnotationElementGetter(annotation, element1);
|
| + return;
|
| + }
|
| + // Class(args)
|
| + if (element1 is ClassElement) {
|
| + ClassElement classElement = element1;
|
| + constructor = new InterfaceTypeImpl.con1(classElement).lookUpConstructor(null, _definingLibrary);
|
| + }
|
| + }
|
| + //
|
| + // prefix.CONST or prefix.Class() or Class.CONST or Class.constructor(args)
|
| + //
|
| + if (nameNode1 != null && nameNode2 != null && nameNode3 == null) {
|
| + Element element1 = nameNode1.staticElement;
|
| + Element element2 = nameNode2.staticElement;
|
| + // Class.CONST - not resolved yet
|
| + if (element1 is ClassElement) {
|
| + ClassElement classElement = element1;
|
| + element2 = classElement.lookUpGetter(nameNode2.name, _definingLibrary);
|
| + }
|
| + // prefix.CONST or Class.CONST
|
| + if (element2 is PropertyAccessorElement) {
|
| + nameNode2.staticElement = element2;
|
| + annotation.element = element2;
|
| + _resolveAnnotationElementGetter(annotation, element2 as PropertyAccessorElement);
|
| + return;
|
| + }
|
| + // prefix.Class()
|
| + if (element2 is ClassElement) {
|
| + ClassElement classElement = element2 as ClassElement;
|
| + constructor = classElement.unnamedConstructor;
|
| + }
|
| + // Class.constructor(args)
|
| + if (element1 is ClassElement) {
|
| + ClassElement classElement = element1;
|
| + constructor = new InterfaceTypeImpl.con1(classElement).lookUpConstructor(nameNode2.name, _definingLibrary);
|
| + nameNode2.staticElement = constructor;
|
| + }
|
| + }
|
| + //
|
| + // prefix.Class.CONST or prefix.Class.constructor(args)
|
| + //
|
| + if (nameNode1 != null && nameNode2 != null && nameNode3 != null) {
|
| + Element element2 = nameNode2.staticElement;
|
| + // element2 should be ClassElement
|
| + if (element2 is ClassElement) {
|
| + ClassElement classElement = element2;
|
| + String name3 = nameNode3.name;
|
| + // prefix.Class.CONST
|
| + PropertyAccessorElement getter = classElement.lookUpGetter(name3, _definingLibrary);
|
| + if (getter != null) {
|
| + nameNode3.staticElement = getter;
|
| + annotation.element = element2;
|
| + _resolveAnnotationElementGetter(annotation, getter);
|
| + return;
|
| + }
|
| + // prefix.Class.constructor(args)
|
| + constructor = new InterfaceTypeImpl.con1(classElement).lookUpConstructor(name3, _definingLibrary);
|
| + nameNode3.staticElement = constructor;
|
| + }
|
| + }
|
| + // we need constructor
|
| + if (constructor == null) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.INVALID_ANNOTATION, annotation, []);
|
| + return;
|
| + }
|
| + // record element
|
| + annotation.element = constructor;
|
| + // resolve arguments
|
| + _resolveAnnotationConstructorInvocationArguments(annotation, constructor);
|
| + }
|
| +
|
| + void _resolveAnnotationElementGetter(Annotation annotation, PropertyAccessorElement accessorElement) {
|
| + // accessor should be synthetic
|
| + if (!accessorElement.isSynthetic) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.INVALID_ANNOTATION, annotation, []);
|
| + return;
|
| + }
|
| + // variable should be constant
|
| + VariableElement variableElement = accessorElement.variable;
|
| + if (!variableElement.isConst) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.INVALID_ANNOTATION, annotation, []);
|
| + }
|
| + // OK
|
| + return;
|
| + }
|
| +
|
| + /**
|
| + * Given a list of arguments and the element that will be invoked using those argument, compute
|
| + * the list of parameters that correspond to the list of arguments. Return the parameters that
|
| + * correspond to the arguments, or `null` if no correspondence could be computed.
|
| + *
|
| + * @param reportError if `true` then compile-time error should be reported; if `false`
|
| + * then compile-time warning
|
| + * @param argumentList the list of arguments being passed to the element
|
| + * @param executableElement the element that will be invoked with the arguments
|
| + * @return the parameters that correspond to the arguments
|
| + */
|
| + List<ParameterElement> _resolveArgumentsToFunction(bool reportError, ArgumentList argumentList, ExecutableElement executableElement) {
|
| + if (executableElement == null) {
|
| + return null;
|
| + }
|
| + List<ParameterElement> parameters = executableElement.parameters;
|
| + return _resolveArgumentsToParameters(reportError, argumentList, parameters);
|
| + }
|
| +
|
| + /**
|
| + * Given a list of arguments and the parameters related to the element that will be invoked using
|
| + * those argument, compute the list of parameters that correspond to the list of arguments. Return
|
| + * the parameters that correspond to the arguments.
|
| + *
|
| + * @param reportError if `true` then compile-time error should be reported; if `false`
|
| + * then compile-time warning
|
| + * @param argumentList the list of arguments being passed to the element
|
| + * @param parameters the of the function that will be invoked with the arguments
|
| + * @return the parameters that correspond to the arguments
|
| + */
|
| + List<ParameterElement> _resolveArgumentsToParameters(bool reportError, ArgumentList argumentList, List<ParameterElement> parameters) {
|
| + List<ParameterElement> requiredParameters = new List<ParameterElement>();
|
| + List<ParameterElement> positionalParameters = new List<ParameterElement>();
|
| + HashMap<String, ParameterElement> namedParameters = new HashMap<String, ParameterElement>();
|
| + for (ParameterElement parameter in parameters) {
|
| + ParameterKind kind = parameter.parameterKind;
|
| + if (kind == ParameterKind.REQUIRED) {
|
| + requiredParameters.add(parameter);
|
| + } else if (kind == ParameterKind.POSITIONAL) {
|
| + positionalParameters.add(parameter);
|
| + } else {
|
| + namedParameters[parameter.name] = parameter;
|
| + }
|
| + }
|
| + List<ParameterElement> unnamedParameters = new List<ParameterElement>.from(requiredParameters);
|
| + unnamedParameters.addAll(positionalParameters);
|
| + int unnamedParameterCount = unnamedParameters.length;
|
| + int unnamedIndex = 0;
|
| + NodeList<Expression> arguments = argumentList.arguments;
|
| + int argumentCount = arguments.length;
|
| + List<ParameterElement> resolvedParameters = new List<ParameterElement>(argumentCount);
|
| + int positionalArgumentCount = 0;
|
| + HashSet<String> usedNames = new HashSet<String>();
|
| + bool noBlankArguments = true;
|
| + for (int i = 0; i < argumentCount; i++) {
|
| + Expression argument = arguments[i];
|
| + if (argument is NamedExpression) {
|
| + SimpleIdentifier nameNode = argument.name.label;
|
| + String name = nameNode.name;
|
| + ParameterElement element = namedParameters[name];
|
| + if (element == null) {
|
| + ErrorCode errorCode = (reportError ? CompileTimeErrorCode.UNDEFINED_NAMED_PARAMETER : StaticWarningCode.UNDEFINED_NAMED_PARAMETER);
|
| + _resolver.reportErrorForNode(errorCode, nameNode, [name]);
|
| + } else {
|
| + resolvedParameters[i] = element;
|
| + nameNode.staticElement = element;
|
| + }
|
| + if (!usedNames.add(name)) {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.DUPLICATE_NAMED_ARGUMENT, nameNode, [name]);
|
| + }
|
| + } else {
|
| + if (argument is SimpleIdentifier && argument.name.isEmpty) {
|
| + noBlankArguments = false;
|
| + }
|
| + positionalArgumentCount++;
|
| + if (unnamedIndex < unnamedParameterCount) {
|
| + resolvedParameters[i] = unnamedParameters[unnamedIndex++];
|
| + }
|
| + }
|
| + }
|
| + if (positionalArgumentCount < requiredParameters.length && noBlankArguments) {
|
| + ErrorCode errorCode = (reportError ? CompileTimeErrorCode.NOT_ENOUGH_REQUIRED_ARGUMENTS : StaticWarningCode.NOT_ENOUGH_REQUIRED_ARGUMENTS);
|
| + _resolver.reportErrorForNode(errorCode, argumentList, [requiredParameters.length, positionalArgumentCount]);
|
| + } else if (positionalArgumentCount > unnamedParameterCount && noBlankArguments) {
|
| + ErrorCode errorCode = (reportError ? CompileTimeErrorCode.EXTRA_POSITIONAL_ARGUMENTS : StaticWarningCode.EXTRA_POSITIONAL_ARGUMENTS);
|
| + _resolver.reportErrorForNode(errorCode, argumentList, [unnamedParameterCount, positionalArgumentCount]);
|
| + }
|
| + return resolvedParameters;
|
| + }
|
| +
|
| + /**
|
| + * Resolve the names in the given combinators in the scope of the given library.
|
| + *
|
| + * @param library the library that defines the names
|
| + * @param combinators the combinators containing the names to be resolved
|
| + */
|
| + void _resolveCombinators(LibraryElement library, NodeList<Combinator> combinators) {
|
| + if (library == null) {
|
| + //
|
| + // The library will be null if the directive containing the combinators has a URI that is not
|
| + // valid.
|
| + //
|
| + return;
|
| + }
|
| + Namespace namespace = new NamespaceBuilder().createExportNamespaceForLibrary(library);
|
| + for (Combinator combinator in combinators) {
|
| + NodeList<SimpleIdentifier> names;
|
| + if (combinator is HideCombinator) {
|
| + names = combinator.hiddenNames;
|
| + } else {
|
| + names = (combinator as ShowCombinator).shownNames;
|
| + }
|
| + for (SimpleIdentifier name in names) {
|
| + String nameStr = name.name;
|
| + Element element = namespace.get(nameStr);
|
| + if (element == null) {
|
| + element = namespace.get("$nameStr=");
|
| + }
|
| + if (element != null) {
|
| + // Ensure that the name always resolves to a top-level variable
|
| + // rather than a getter or setter
|
| + if (element is PropertyAccessorElement) {
|
| + element = (element as PropertyAccessorElement).variable;
|
| + }
|
| + name.staticElement = element;
|
| + }
|
| + }
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Given an invocation of the form 'C.x()' where 'C' is a class, find and return the element 'x'
|
| + * in 'C'.
|
| + *
|
| + * @param classElement the class element
|
| + * @param nameNode the member name node
|
| + */
|
| + Element _resolveElement(ClassElementImpl classElement, SimpleIdentifier nameNode) {
|
| + String name = nameNode.name;
|
| + Element element = classElement.getMethod(name);
|
| + if (element == null && nameNode.inSetterContext()) {
|
| + element = classElement.getSetter(name);
|
| + }
|
| + if (element == null && nameNode.inGetterContext()) {
|
| + element = classElement.getGetter(name);
|
| + }
|
| + if (element != null && element.isAccessibleIn(_definingLibrary)) {
|
| + return element;
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * Given an invocation of the form 'm(a1, ..., an)', resolve 'm' to the element being invoked. If
|
| + * the returned element is a method, then the method will be invoked. If the returned element is a
|
| + * getter, the getter will be invoked without arguments and the result of that invocation will
|
| + * then be invoked with the arguments.
|
| + *
|
| + * @param methodName the name of the method being invoked ('m')
|
| + * @return the element being invoked
|
| + */
|
| + Element _resolveInvokedElement(SimpleIdentifier methodName) {
|
| + //
|
| + // Look first in the lexical scope.
|
| + //
|
| + Element element = _resolver.nameScope.lookup(methodName, _definingLibrary);
|
| + if (element == null) {
|
| + //
|
| + // If it isn't defined in the lexical scope, and the invocation is within a class, then look
|
| + // in the inheritance scope.
|
| + //
|
| + ClassElement enclosingClass = _resolver.enclosingClass;
|
| + if (enclosingClass != null) {
|
| + InterfaceType enclosingType = enclosingClass.type;
|
| + element = _lookUpMethod(null, enclosingType, methodName.name);
|
| + if (element == null) {
|
| + //
|
| + // If there's no method, then it's possible that 'm' is a getter that returns a function.
|
| + //
|
| + element = _lookUpGetter(null, enclosingType, methodName.name);
|
| + }
|
| + }
|
| + }
|
| + // TODO(brianwilkerson) Report this error.
|
| + return element;
|
| + }
|
| +
|
| + /**
|
| + * Given an invocation of the form 'e.m(a1, ..., an)', resolve 'e.m' to the element being invoked.
|
| + * If the returned element is a method, then the method will be invoked. If the returned element
|
| + * is a getter, the getter will be invoked without arguments and the result of that invocation
|
| + * will then be invoked with the arguments.
|
| + *
|
| + * @param target the target of the invocation ('e')
|
| + * @param targetType the type of the target
|
| + * @param methodName the name of the method being invoked ('m')
|
| + * @return the element being invoked
|
| + */
|
| + Element _resolveInvokedElementWithTarget(Expression target, DartType targetType, SimpleIdentifier methodName) {
|
| + if (targetType is InterfaceType || targetType is UnionType) {
|
| + Element element = _lookUpMethod(target, targetType, methodName.name);
|
| + if (element == null) {
|
| + //
|
| + // If there's no method, then it's possible that 'm' is a getter that returns a function.
|
| + //
|
| + // TODO (collinsn): need to add union type support here too, in the style of [lookUpMethod].
|
| + element = _lookUpGetter(target, targetType, methodName.name);
|
| + }
|
| + return element;
|
| + } else if (target is SimpleIdentifier) {
|
| + Element targetElement = target.staticElement;
|
| + if (targetElement is PrefixElement) {
|
| + //
|
| + // Look to see whether the name of the method is really part of a prefixed identifier for an
|
| + // imported top-level function or top-level getter that returns a function.
|
| + //
|
| + String name = "${target.name}.$methodName";
|
| + Identifier functionName = new ElementResolver_SyntheticIdentifier(name);
|
| + Element element = _resolver.nameScope.lookup(functionName, _definingLibrary);
|
| + if (element != null) {
|
| + // TODO(brianwilkerson) This isn't a method invocation, it's a function invocation where
|
| + // the function name is a prefixed identifier. Consider re-writing the AST.
|
| + return element;
|
| + }
|
| + }
|
| + }
|
| + // TODO(brianwilkerson) Report this error.
|
| + return null;
|
| + }
|
| +
|
| + /**
|
| + * Given that we are accessing a property of the given type with the given name, return the
|
| + * element that represents the property.
|
| + *
|
| + * @param target the target of the invocation ('e')
|
| + * @param targetType the type in which the search for the property should begin
|
| + * @param propertyName the name of the property being accessed
|
| + * @return the element that represents the property
|
| + */
|
| + ExecutableElement _resolveProperty(Expression target, DartType targetType, SimpleIdentifier propertyName) {
|
| + ExecutableElement memberElement = null;
|
| + if (propertyName.inSetterContext()) {
|
| + memberElement = _lookUpSetter(target, targetType, propertyName.name);
|
| + }
|
| + if (memberElement == null) {
|
| + memberElement = _lookUpGetter(target, targetType, propertyName.name);
|
| + }
|
| + if (memberElement == null) {
|
| + memberElement = _lookUpMethod(target, targetType, propertyName.name);
|
| + }
|
| + return memberElement;
|
| + }
|
| +
|
| + void _resolvePropertyAccess(Expression target, SimpleIdentifier propertyName) {
|
| + DartType staticType = _getStaticType(target);
|
| + DartType propagatedType = _getPropagatedType(target);
|
| + Element staticElement = null;
|
| + Element propagatedElement = null;
|
| + //
|
| + // If this property access is of the form 'C.m' where 'C' is a class, then we don't call
|
| + // resolveProperty(..) which walks up the class hierarchy, instead we just look for the
|
| + // member in the type only.
|
| + //
|
| + ClassElementImpl typeReference = getTypeReference(target);
|
| + if (typeReference != null) {
|
| + // TODO(brianwilkerson) Why are we setting the propagated element here? It looks wrong.
|
| + staticElement = propagatedElement = _resolveElement(typeReference, propertyName);
|
| + } else {
|
| + staticElement = _resolveProperty(target, staticType, propertyName);
|
| + propagatedElement = _resolveProperty(target, propagatedType, propertyName);
|
| + }
|
| + // May be part of annotation, record property element only if exists.
|
| + // Error was already reported in validateAnnotationElement().
|
| + if (target.parent.parent is Annotation) {
|
| + if (staticElement != null) {
|
| + propertyName.staticElement = staticElement;
|
| + }
|
| + return;
|
| + }
|
| + propertyName.staticElement = staticElement;
|
| + propertyName.propagatedElement = propagatedElement;
|
| + bool shouldReportMissingMember_static = _shouldReportMissingMember(staticType, staticElement);
|
| + bool shouldReportMissingMember_propagated = !shouldReportMissingMember_static && _enableHints && _shouldReportMissingMember(propagatedType, propagatedElement) && !_memberFoundInSubclass(propagatedType.element, propertyName.name, false, true);
|
| + // TODO(collinsn): add support for errors on union types by extending
|
| + // [lookupGetter] and [lookupSetter] in analogy with the earlier [lookupMethod] extensions.
|
| + if (propagatedType is UnionType) {
|
| + shouldReportMissingMember_propagated = false;
|
| + }
|
| + if (shouldReportMissingMember_static || shouldReportMissingMember_propagated) {
|
| + Element staticOrPropagatedEnclosingElt = shouldReportMissingMember_static ? staticType.element : propagatedType.element;
|
| + bool isStaticProperty = _isStatic(staticOrPropagatedEnclosingElt);
|
| + String displayName = staticOrPropagatedEnclosingElt != null ? staticOrPropagatedEnclosingElt.displayName : propagatedType != null ? propagatedType.displayName : staticType.displayName;
|
| + // Special getter cases.
|
| + if (propertyName.inGetterContext()) {
|
| + if (!isStaticProperty && staticOrPropagatedEnclosingElt is ClassElement) {
|
| + ClassElement classElement = staticOrPropagatedEnclosingElt;
|
| + InterfaceType targetType = classElement.type;
|
| + if (targetType != null && targetType.isDartCoreFunction && propertyName.name == FunctionElement.CALL_METHOD_NAME) {
|
| + // TODO(brianwilkerson) Can we ever resolve the function being invoked?
|
| + //resolveArgumentsToParameters(node.getArgumentList(), invokedFunction);
|
| + return;
|
| + } else if (classElement.isEnum && propertyName.name == "_name") {
|
| + _resolver.reportErrorForNode(CompileTimeErrorCode.ACCESS_PRIVATE_ENUM_FIELD, propertyName, [propertyName.name]);
|
| + return;
|
| + }
|
| + }
|
| + }
|
| + Element declaringElement = staticType.isVoid ? null : staticOrPropagatedEnclosingElt;
|
| + if (propertyName.inSetterContext()) {
|
| + ErrorCode staticErrorCode = (isStaticProperty && !staticType.isVoid ? StaticWarningCode.UNDEFINED_SETTER : StaticTypeWarningCode.UNDEFINED_SETTER);
|
| + ErrorCode errorCode = shouldReportMissingMember_static ? staticErrorCode : HintCode.UNDEFINED_SETTER;
|
| + _recordUndefinedNode(declaringElement, errorCode, propertyName, [propertyName.name, displayName]);
|
| + } else if (propertyName.inGetterContext()) {
|
| + ErrorCode staticErrorCode = (isStaticProperty && !staticType.isVoid ? StaticWarningCode.UNDEFINED_GETTER : StaticTypeWarningCode.UNDEFINED_GETTER);
|
| + ErrorCode errorCode = shouldReportMissingMember_static ? staticErrorCode : HintCode.UNDEFINED_GETTER;
|
| + _recordUndefinedNode(declaringElement, errorCode, propertyName, [propertyName.name, displayName]);
|
| + } else {
|
| + _recordUndefinedNode(declaringElement, StaticWarningCode.UNDEFINED_IDENTIFIER, propertyName, [propertyName.name]);
|
| + }
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Resolve the given simple identifier if possible. Return the element to which it could be
|
| + * resolved, or `null` if it could not be resolved. This does not record the results of the
|
| + * resolution.
|
| + *
|
| + * @param node the identifier to be resolved
|
| + * @return the element to which the identifier could be resolved
|
| + */
|
| + Element _resolveSimpleIdentifier(SimpleIdentifier node) {
|
| + Element element = _resolver.nameScope.lookup(node, _definingLibrary);
|
| + if (element is PropertyAccessorElement && node.inSetterContext()) {
|
| + PropertyInducingElement variable = (element as PropertyAccessorElement).variable;
|
| + if (variable != null) {
|
| + PropertyAccessorElement setter = variable.setter;
|
| + if (setter == null) {
|
| + //
|
| + // Check to see whether there might be a locally defined getter and an inherited setter.
|
| + //
|
| + ClassElement enclosingClass = _resolver.enclosingClass;
|
| + if (enclosingClass != null) {
|
| + setter = _lookUpSetter(null, enclosingClass.type, node.name);
|
| + }
|
| + }
|
| + if (setter != null) {
|
| + element = setter;
|
| + }
|
| + }
|
| + } else if (element == null && (node.inSetterContext() || node.parent is CommentReference)) {
|
| + element = _resolver.nameScope.lookup(new ElementResolver_SyntheticIdentifier("${node.name}="), _definingLibrary);
|
| + }
|
| + ClassElement enclosingClass = _resolver.enclosingClass;
|
| + if (element == null && enclosingClass != null) {
|
| + InterfaceType enclosingType = enclosingClass.type;
|
| + if (element == null && (node.inSetterContext() || node.parent is CommentReference)) {
|
| + element = _lookUpSetter(null, enclosingType, node.name);
|
| + }
|
| + if (element == null && node.inGetterContext()) {
|
| + element = _lookUpGetter(null, enclosingType, node.name);
|
| + }
|
| + if (element == null) {
|
| + element = _lookUpMethod(null, enclosingType, node.name);
|
| + }
|
| + }
|
| + return element;
|
| + }
|
| +
|
| + /**
|
| + * If the given type is a type parameter, resolve it to the type that should be used when looking
|
| + * up members. Otherwise, return the original type.
|
| + *
|
| + * @param type the type that is to be resolved if it is a type parameter
|
| + * @return the type that should be used in place of the argument if it is a type parameter, or the
|
| + * original argument if it isn't a type parameter
|
| + */
|
| + DartType _resolveTypeParameter(DartType type) {
|
| + if (type is TypeParameterType) {
|
| + DartType bound = type.element.bound;
|
| + if (bound == null) {
|
| + return _resolver.typeProvider.objectType;
|
| + }
|
| + return bound;
|
| + }
|
| + return type;
|
| + }
|
| +
|
| + /**
|
| + * Given a node that can have annotations associated with it and the element to which that node
|
| + * has been resolved, create the annotations in the element model representing the annotations on
|
| + * the node.
|
| + *
|
| + * @param element the element to which the node has been resolved
|
| + * @param node the node that can have annotations associated with it
|
| + */
|
| + void _setMetadata(Element element, AnnotatedNode node) {
|
| + if (element is! ElementImpl) {
|
| + return;
|
| + }
|
| + List<ElementAnnotationImpl> annotationList = new List<ElementAnnotationImpl>();
|
| + _addAnnotations(annotationList, node.metadata);
|
| + if (node is VariableDeclaration && node.parent is VariableDeclarationList) {
|
| + VariableDeclarationList list = node.parent as VariableDeclarationList;
|
| + _addAnnotations(annotationList, list.metadata);
|
| + if (list.parent is FieldDeclaration) {
|
| + FieldDeclaration fieldDeclaration = list.parent as FieldDeclaration;
|
| + _addAnnotations(annotationList, fieldDeclaration.metadata);
|
| + } else if (list.parent is TopLevelVariableDeclaration) {
|
| + TopLevelVariableDeclaration variableDeclaration = list.parent as TopLevelVariableDeclaration;
|
| + _addAnnotations(annotationList, variableDeclaration.metadata);
|
| + }
|
| + }
|
| + if (!annotationList.isEmpty) {
|
| + (element as ElementImpl).metadata = annotationList;
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Given a node that can have annotations associated with it and the element to which that node
|
| + * has been resolved, create the annotations in the element model representing the annotations on
|
| + * the node.
|
| + *
|
| + * @param element the element to which the node has been resolved
|
| + * @param node the node that can have annotations associated with it
|
| + */
|
| + void _setMetadataForParameter(Element element, NormalFormalParameter node) {
|
| + if (element is! ElementImpl) {
|
| + return;
|
| + }
|
| + List<ElementAnnotationImpl> annotationList = new List<ElementAnnotationImpl>();
|
| + _addAnnotations(annotationList, node.metadata);
|
| + if (!annotationList.isEmpty) {
|
| + (element as ElementImpl).metadata = annotationList;
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if we should report an error as a result of looking up a member in the
|
| + * given type and not finding any member.
|
| + *
|
| + * @param type the type in which we attempted to perform the look-up
|
| + * @param member the result of the look-up
|
| + * @return `true` if we should report an error
|
| + */
|
| + bool _shouldReportMissingMember(DartType type, Element member) {
|
| + if (member != null || type == null || type.isDynamic || type.isBottom) {
|
| + return false;
|
| + }
|
| + return true;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `SyntheticIdentifier` implement an identifier that can be used to
|
| + * look up names in the lexical scope when there is no identifier in the AST structure. There is
|
| + * no identifier in the AST when the parser could not distinguish between a method invocation and
|
| + * an invocation of a top-level function imported with a prefix.
|
| + */
|
| +class ElementResolver_SyntheticIdentifier extends Identifier {
|
| + /**
|
| + * The name of the synthetic identifier.
|
| + */
|
| + final String name;
|
| +
|
| + /**
|
| + * Initialize a newly created synthetic identifier to have the given name.
|
| + *
|
| + * @param name the name of the synthetic identifier
|
| + */
|
| + ElementResolver_SyntheticIdentifier(this.name);
|
| +
|
| + @override
|
| + accept(AstVisitor visitor) => null;
|
| +
|
| + @override
|
| + sc.Token get beginToken => null;
|
| +
|
| + @override
|
| + Element get bestElement => null;
|
| +
|
| + @override
|
| + sc.Token get endToken => null;
|
| +
|
| + @override
|
| + int get precedence => 16;
|
| +
|
| + @override
|
| + Element get propagatedElement => null;
|
| +
|
| + @override
|
| + Element get staticElement => null;
|
| +
|
| + @override
|
| + void visitChildren(AstVisitor visitor) {
|
| + }
|
| +}
|
| +
|
|
|
Chromium Code Reviews
Issue 700753002:
Split the largest classes from resolver.dart to their own files. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart